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Finding the Fourth Proportional to 447,711.70, 671,567.55 and 398,722.90

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Solution

The fourth proportional to 447,711.70, 671,567.55 and 398,722.90 is: 598,084.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,711.70 : 671,567.55 = 398,722.90 : x
  2. Step 2: Convert to fraction form
    447,711.70/671,567.55 = 398,722.90/x
  3. Step 3: Cross multiply
    447,711.70x = 671,567.55 × 398,722.90
  4. Step 4: Simplify right side
    447,711.70x = 267,769,361,081.90
  5. Step 5: Solve for x
    x = 267,769,361,081.90/447,711.70
  6. Step 6: Final answer
    x = 598,084.35

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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.