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Finding the Fourth Proportional to 486,015.40, 729,023.10 and 397,441.90

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Solution

The fourth proportional to 486,015.40, 729,023.10 and 397,441.90 is: 596,162.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,015.40 : 729,023.10 = 397,441.90 : x
  2. Step 2: Convert to fraction form
    486,015.40/729,023.10 = 397,441.90/x
  3. Step 3: Cross multiply
    486,015.40x = 729,023.10 × 397,441.90
  4. Step 4: Simplify right side
    486,015.40x = 289,744,326,007.89
  5. Step 5: Solve for x
    x = 289,744,326,007.89/486,015.40
  6. Step 6: Final answer
    x = 596,162.85

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Similar ratio
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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.