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Finding the Fourth Proportional to 496,007.20, 744,010.80 and 318,860.20

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Solution

The fourth proportional to 496,007.20, 744,010.80 and 318,860.20 is: 478,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,007.20 : 744,010.80 = 318,860.20 : x
  2. Step 2: Convert to fraction form
    496,007.20/744,010.80 = 318,860.20/x
  3. Step 3: Cross multiply
    496,007.20x = 744,010.80 × 318,860.20
  4. Step 4: Simplify right side
    496,007.20x = 237,235,432,490.16
  5. Step 5: Solve for x
    x = 237,235,432,490.16/496,007.20
  6. Step 6: Final answer
    x = 478,290.30

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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.