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Finding the Fourth Proportional to 712,104.96, 982,704.76 and 389,815.27

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Solution

The fourth proportional to 712,104.96, 982,704.76 and 389,815.27 is: 537,945.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,104.96 : 982,704.76 = 389,815.27 : x
  2. Step 2: Convert to fraction form
    712,104.96/982,704.76 = 389,815.27/x
  3. Step 3: Cross multiply
    712,104.96x = 982,704.76 × 389,815.27
  4. Step 4: Simplify right side
    712,104.96x = 383,073,321,349.69
  5. Step 5: Solve for x
    x = 383,073,321,349.69/712,104.96
  6. Step 6: Final answer
    x = 537,945.03

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Double scale
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Similar ratio
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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.