Home / 1,217,282,641.25-1,679,708,327.04-681,463,646.91

Finding the Fourth Proportional to 1,217,282,641.25, 1,679,708,327.04 and 681,463,646.91

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Solution

The fourth proportional to 1,217,282,641.25, 1,679,708,327.04 and 681,463,646.91 is: 940,340,495.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,641.25 : 1,679,708,327.04 = 681,463,646.91 : x
  2. Step 2: Convert to fraction form
    1,217,282,641.25/1,679,708,327.04 = 681,463,646.91/x
  3. Step 3: Cross multiply
    1,217,282,641.25x = 1,679,708,327.04 × 681,463,646.91
  4. Step 4: Simplify right side
    1,217,282,641.25x = 1,144,660,162,289,773,312
  5. Step 5: Solve for x
    x = 1,144,660,162,289,773,312/1,217,282,641.25
  6. Step 6: Final answer
    x = 940,340,495.71

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Half scale
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Double scale
Find fourth proportional to 1,217,282,642.25, 1,679,708,328.42 and 681,463,647.91
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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.