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Finding the Fourth Proportional to 574,419.20, 861,628.80 and 455,446.40

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Solution

The fourth proportional to 574,419.20, 861,628.80 and 455,446.40 is: 683,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,419.20 : 861,628.80 = 455,446.40 : x
  2. Step 2: Convert to fraction form
    574,419.20/861,628.80 = 455,446.40/x
  3. Step 3: Cross multiply
    574,419.20x = 861,628.80 × 455,446.40
  4. Step 4: Simplify right side
    574,419.20x = 392,425,735,096.32
  5. Step 5: Solve for x
    x = 392,425,735,096.32/574,419.20
  6. Step 6: Final answer
    x = 683,169.60

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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.