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Finding the Fourth Proportional to 658,363.67, 908,615.82 and 371,902.20

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Solution

The fourth proportional to 658,363.67, 908,615.82 and 371,902.20 is: 513,266.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,363.67 : 908,615.82 = 371,902.20 : x
  2. Step 2: Convert to fraction form
    658,363.67/908,615.82 = 371,902.20/x
  3. Step 3: Cross multiply
    658,363.67x = 908,615.82 × 371,902.20
  4. Step 4: Simplify right side
    658,363.67x = 337,916,222,412.80
  5. Step 5: Solve for x
    x = 337,916,222,412.80/658,363.67
  6. Step 6: Final answer
    x = 513,266.81

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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.