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Finding the Fourth Proportional to 551,200.20, 826,800.30 and 491,065.80

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Solution

The fourth proportional to 551,200.20, 826,800.30 and 491,065.80 is: 736,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,200.20 : 826,800.30 = 491,065.80 : x
  2. Step 2: Convert to fraction form
    551,200.20/826,800.30 = 491,065.80/x
  3. Step 3: Cross multiply
    551,200.20x = 826,800.30 × 491,065.80
  4. Step 4: Simplify right side
    551,200.20x = 406,013,350,759.74
  5. Step 5: Solve for x
    x = 406,013,350,759.74/551,200.20
  6. Step 6: Final answer
    x = 736,598.70

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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.