Home / 687,787.20-1,029,931.20-656,294.40

Finding the Fourth Proportional to 687,787.20, 1,029,931.20 and 656,294.40

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Solution

The fourth proportional to 687,787.20, 1,029,931.20 and 656,294.40 is: 982,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,787.20 : 1,029,931.20 = 656,294.40 : x
  2. Step 2: Convert to fraction form
    687,787.20/1,029,931.20 = 656,294.40/x
  3. Step 3: Cross multiply
    687,787.20x = 1,029,931.20 × 656,294.40
  4. Step 4: Simplify right side
    687,787.20x = 675,938,078,945.28
  5. Step 5: Solve for x
    x = 675,938,078,945.28/687,787.20
  6. Step 6: Final answer
    x = 982,772.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.