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Finding the Fourth Proportional to 492,066.40, 738,099.60 and 448,520.80

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Solution

The fourth proportional to 492,066.40, 738,099.60 and 448,520.80 is: 672,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,066.40 : 738,099.60 = 448,520.80 : x
  2. Step 2: Convert to fraction form
    492,066.40/738,099.60 = 448,520.80/x
  3. Step 3: Cross multiply
    492,066.40x = 738,099.60 × 448,520.80
  4. Step 4: Simplify right side
    492,066.40x = 331,053,023,071.68
  5. Step 5: Solve for x
    x = 331,053,023,071.68/492,066.40
  6. Step 6: Final answer
    x = 672,781.20

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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.