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Finding the Fourth Proportional to 602,821.20, 905,124.60 and 337,112.40

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Solution

The fourth proportional to 602,821.20, 905,124.60 and 337,112.40 is: 506,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,821.20 : 905,124.60 = 337,112.40 : x
  2. Step 2: Convert to fraction form
    602,821.20/905,124.60 = 337,112.40/x
  3. Step 3: Cross multiply
    602,821.20x = 905,124.60 × 337,112.40
  4. Step 4: Simplify right side
    602,821.20x = 305,128,726,205.04
  5. Step 5: Solve for x
    x = 305,128,726,205.04/602,821.20
  6. Step 6: Final answer
    x = 506,167.88

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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.