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Finding the Fourth Proportional to 485,624.10, 728,436.15 and 482,513.70

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Solution

The fourth proportional to 485,624.10, 728,436.15 and 482,513.70 is: 723,770.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,624.10 : 728,436.15 = 482,513.70 : x
  2. Step 2: Convert to fraction form
    485,624.10/728,436.15 = 482,513.70/x
  3. Step 3: Cross multiply
    485,624.10x = 728,436.15 × 482,513.70
  4. Step 4: Simplify right side
    485,624.10x = 351,480,421,950.26
  5. Step 5: Solve for x
    x = 351,480,421,950.26/485,624.10
  6. Step 6: Final answer
    x = 723,770.55

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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.