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Finding the Fourth Proportional to 499,842.80, 749,764.20 and 451,631.60

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Solution

The fourth proportional to 499,842.80, 749,764.20 and 451,631.60 is: 677,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,842.80 : 749,764.20 = 451,631.60 : x
  2. Step 2: Convert to fraction form
    499,842.80/749,764.20 = 451,631.60/x
  3. Step 3: Cross multiply
    499,842.80x = 749,764.20 × 451,631.60
  4. Step 4: Simplify right side
    499,842.80x = 338,617,205,268.72
  5. Step 5: Solve for x
    x = 338,617,205,268.72/499,842.80
  6. Step 6: Final answer
    x = 677,447.40

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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.