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Finding the Fourth Proportional to 499,481.80, 749,222.70 and 491,187.40

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Solution

The fourth proportional to 499,481.80, 749,222.70 and 491,187.40 is: 736,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,481.80 : 749,222.70 = 491,187.40 : x
  2. Step 2: Convert to fraction form
    499,481.80/749,222.70 = 491,187.40/x
  3. Step 3: Cross multiply
    499,481.80x = 749,222.70 × 491,187.40
  4. Step 4: Simplify right side
    499,481.80x = 368,008,750,033.98
  5. Step 5: Solve for x
    x = 368,008,750,033.98/499,481.80
  6. Step 6: Final answer
    x = 736,781.10

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Similar ratio
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1.5x scale

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.