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Finding the Fourth Proportional to 819,891.20, 1,230,355.20 and 482,931.20

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Solution

The fourth proportional to 819,891.20, 1,230,355.20 and 482,931.20 is: 724,702.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,891.20 : 1,230,355.20 = 482,931.20 : x
  2. Step 2: Convert to fraction form
    819,891.20/1,230,355.20 = 482,931.20/x
  3. Step 3: Cross multiply
    819,891.20x = 1,230,355.20 × 482,931.20
  4. Step 4: Simplify right side
    819,891.20x = 594,176,913,162.24
  5. Step 5: Solve for x
    x = 594,176,913,162.24/819,891.20
  6. Step 6: Final answer
    x = 724,702.15

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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.