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Finding the Fourth Proportional to 547,007.30, 820,154.55 and 491,020.10

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Solution

The fourth proportional to 547,007.30, 820,154.55 and 491,020.10 is: 736,210.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,007.30 : 820,154.55 = 491,020.10 : x
  2. Step 2: Convert to fraction form
    547,007.30/820,154.55 = 491,020.10/x
  3. Step 3: Cross multiply
    547,007.30x = 820,154.55 × 491,020.10
  4. Step 4: Simplify right side
    547,007.30x = 402,712,369,156.46
  5. Step 5: Solve for x
    x = 402,712,369,156.46/547,007.30
  6. Step 6: Final answer
    x = 736,210.23

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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.