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Finding the Fourth Proportional to 617,640.90, 924,906.15 and 406,133.70

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Solution

The fourth proportional to 617,640.90, 924,906.15 and 406,133.70 is: 608,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,640.90 : 924,906.15 = 406,133.70 : x
  2. Step 2: Convert to fraction form
    617,640.90/924,906.15 = 406,133.70/x
  3. Step 3: Cross multiply
    617,640.90x = 924,906.15 × 406,133.70
  4. Step 4: Simplify right side
    617,640.90x = 375,635,556,852.26
  5. Step 5: Solve for x
    x = 375,635,556,852.26/617,640.90
  6. Step 6: Final answer
    x = 608,177.92

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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.