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Finding the Fourth Proportional to 574,479.20, 861,718.80 and 524,712.80

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Solution

The fourth proportional to 574,479.20, 861,718.80 and 524,712.80 is: 787,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,479.20 : 861,718.80 = 524,712.80 : x
  2. Step 2: Convert to fraction form
    574,479.20/861,718.80 = 524,712.80/x
  3. Step 3: Cross multiply
    574,479.20x = 861,718.80 × 524,712.80
  4. Step 4: Simplify right side
    574,479.20x = 452,154,884,360.64
  5. Step 5: Solve for x
    x = 452,154,884,360.64/574,479.20
  6. Step 6: Final answer
    x = 787,069.20

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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.