Home / 1,440,688.85-1,988,179.12-787,355.29

Finding the Fourth Proportional to 1,440,688.85, 1,988,179.12 and 787,355.29

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Solution

The fourth proportional to 1,440,688.85, 1,988,179.12 and 787,355.29 is: 1,086,565.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,688.85 : 1,988,179.12 = 787,355.29 : x
  2. Step 2: Convert to fraction form
    1,440,688.85/1,988,179.12 = 787,355.29/x
  3. Step 3: Cross multiply
    1,440,688.85x = 1,988,179.12 × 787,355.29
  4. Step 4: Simplify right side
    1,440,688.85x = 1,565,403,339,885.46
  5. Step 5: Solve for x
    x = 1,565,403,339,885.46/1,440,688.85
  6. Step 6: Final answer
    x = 1,086,565.88

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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.