Home / 1,217,282,661.51-1,679,708,354.96-681,463,667.22

Finding the Fourth Proportional to 1,217,282,661.51, 1,679,708,354.96 and 681,463,667.22

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Solution

The fourth proportional to 1,217,282,661.51, 1,679,708,354.96 and 681,463,667.22 is: 940,340,523.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,661.51 : 1,679,708,354.96 = 681,463,667.22 : x
  2. Step 2: Convert to fraction form
    1,217,282,661.51/1,679,708,354.96 = 681,463,667.22/x
  3. Step 3: Cross multiply
    1,217,282,661.51x = 1,679,708,354.96 × 681,463,667.22
  4. Step 4: Simplify right side
    1,217,282,661.51x = 1,144,660,215,427,707,776
  5. Step 5: Solve for x
    x = 1,144,660,215,427,707,776/1,217,282,661.51
  6. Step 6: Final answer
    x = 940,340,523.71

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Half scale
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Double scale
Find fourth proportional to 1,217,282,662.51, 1,679,708,356.33 and 681,463,668.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.