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Finding the Fourth Proportional to 575,691.40, 861,981.90 and 451,275.40

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Solution

The fourth proportional to 575,691.40, 861,981.90 and 451,275.40 is: 675,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,691.40 : 861,981.90 = 451,275.40 : x
  2. Step 2: Convert to fraction form
    575,691.40/861,981.90 = 451,275.40/x
  3. Step 3: Cross multiply
    575,691.40x = 861,981.90 × 451,275.40
  4. Step 4: Simplify right side
    575,691.40x = 388,991,226,715.26
  5. Step 5: Solve for x
    x = 388,991,226,715.26/575,691.40
  6. Step 6: Final answer
    x = 675,694.00

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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.