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Finding the Fourth Proportional to 499,549.80, 749,324.70 and 491,255.40

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Solution

The fourth proportional to 499,549.80, 749,324.70 and 491,255.40 is: 736,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,549.80 : 749,324.70 = 491,255.40 : x
  2. Step 2: Convert to fraction form
    499,549.80/749,324.70 = 491,255.40/x
  3. Step 3: Cross multiply
    499,549.80x = 749,324.70 × 491,255.40
  4. Step 4: Simplify right side
    499,549.80x = 368,109,805,228.38
  5. Step 5: Solve for x
    x = 368,109,805,228.38/499,549.80
  6. Step 6: Final answer
    x = 736,883.10

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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.