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Finding the Fourth Proportional to 658,219.23, 908,360.46 and 371,781.90

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Solution

The fourth proportional to 658,219.23, 908,360.46 and 371,781.90 is: 513,069.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,219.23 : 908,360.46 = 371,781.90 : x
  2. Step 2: Convert to fraction form
    658,219.23/908,360.46 = 371,781.90/x
  3. Step 3: Cross multiply
    658,219.23x = 908,360.46 × 371,781.90
  4. Step 4: Simplify right side
    658,219.23x = 337,711,977,703.67
  5. Step 5: Solve for x
    x = 337,711,977,703.67/658,219.23
  6. Step 6: Final answer
    x = 513,069.15

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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.