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Finding the Fourth Proportional to 617,091.68, 924,680.10 and 427,921.04

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Solution

The fourth proportional to 617,091.68, 924,680.10 and 427,921.04 is: 641,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,091.68 : 924,680.10 = 427,921.04 : x
  2. Step 2: Convert to fraction form
    617,091.68/924,680.10 = 427,921.04/x
  3. Step 3: Cross multiply
    617,091.68x = 924,680.10 × 427,921.04
  4. Step 4: Simplify right side
    617,091.68x = 395,690,070,059.30
  5. Step 5: Solve for x
    x = 395,690,070,059.30/617,091.68
  6. Step 6: Final answer
    x = 641,217.64

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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.