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Finding the Fourth Proportional to 605,862.20, 908,793.30 and 416,905.40

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Solution

The fourth proportional to 605,862.20, 908,793.30 and 416,905.40 is: 625,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,862.20 : 908,793.30 = 416,905.40 : x
  2. Step 2: Convert to fraction form
    605,862.20/908,793.30 = 416,905.40/x
  3. Step 3: Cross multiply
    605,862.20x = 908,793.30 × 416,905.40
  4. Step 4: Simplify right side
    605,862.20x = 378,880,834,253.82
  5. Step 5: Solve for x
    x = 378,880,834,253.82/605,862.20
  6. Step 6: Final answer
    x = 625,358.10

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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.