Home / 680,428.11-938,830.59-571,944.81

Finding the Fourth Proportional to 680,428.11, 938,830.59 and 571,944.81

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Solution

The fourth proportional to 680,428.11, 938,830.59 and 571,944.81 is: 789,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,428.11 : 938,830.59 = 571,944.81 : x
  2. Step 2: Convert to fraction form
    680,428.11/938,830.59 = 571,944.81/x
  3. Step 3: Cross multiply
    680,428.11x = 938,830.59 × 571,944.81
  4. Step 4: Simplify right side
    680,428.11x = 536,959,283,419.74
  5. Step 5: Solve for x
    x = 536,959,283,419.74/680,428.11
  6. Step 6: Final answer
    x = 789,149.18

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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.