Home / 1,217,282,642.37-1,679,708,328.59-681,463,648.02

Finding the Fourth Proportional to 1,217,282,642.37, 1,679,708,328.59 and 681,463,648.02

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Solution

The fourth proportional to 1,217,282,642.37, 1,679,708,328.59 and 681,463,648.02 is: 940,340,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,642.37 : 1,679,708,328.59 = 681,463,648.02 : x
  2. Step 2: Convert to fraction form
    1,217,282,642.37/1,679,708,328.59 = 681,463,648.02/x
  3. Step 3: Cross multiply
    1,217,282,642.37x = 1,679,708,328.59 × 681,463,648.02
  4. Step 4: Simplify right side
    1,217,282,642.37x = 1,144,660,165,198,712,448
  5. Step 5: Solve for x
    x = 1,144,660,165,198,712,448/1,217,282,642.37
  6. Step 6: Final answer
    x = 940,340,497.24

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Half scale
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Double scale
Find fourth proportional to 1,217,282,643.37, 1,679,708,329.96 and 681,463,649.02
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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.