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Finding the Fourth Proportional to 499,820.80, 749,731.20 and 451,609.60

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Solution

The fourth proportional to 499,820.80, 749,731.20 and 451,609.60 is: 677,414.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,820.80 : 749,731.20 = 451,609.60 : x
  2. Step 2: Convert to fraction form
    499,820.80/749,731.20 = 451,609.60/x
  3. Step 3: Cross multiply
    499,820.80x = 749,731.20 × 451,609.60
  4. Step 4: Simplify right side
    499,820.80x = 338,585,807,339.52
  5. Step 5: Solve for x
    x = 338,585,807,339.52/499,820.80
  6. Step 6: Final answer
    x = 677,414.40

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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.