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Finding the Fourth Proportional to 667,449.12, 920,825.58 and 493,437.12

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Solution

The fourth proportional to 667,449.12, 920,825.58 and 493,437.12 is: 680,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,449.12 : 920,825.58 = 493,437.12 : x
  2. Step 2: Convert to fraction form
    667,449.12/920,825.58 = 493,437.12/x
  3. Step 3: Cross multiply
    667,449.12x = 920,825.58 × 493,437.12
  4. Step 4: Simplify right side
    667,449.12x = 454,369,522,217.53
  5. Step 5: Solve for x
    x = 454,369,522,217.53/667,449.12
  6. Step 6: Final answer
    x = 680,755.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.