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Finding the Fourth Proportional to 425,862.92, 638,042.70 and 379,527.68

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Solution

The fourth proportional to 425,862.92, 638,042.70 and 379,527.68 is: 568,621.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,862.92 : 638,042.70 = 379,527.68 : x
  2. Step 2: Convert to fraction form
    425,862.92/638,042.70 = 379,527.68/x
  3. Step 3: Cross multiply
    425,862.92x = 638,042.70 × 379,527.68
  4. Step 4: Simplify right side
    425,862.92x = 242,154,865,671.94
  5. Step 5: Solve for x
    x = 242,154,865,671.94/425,862.92
  6. Step 6: Final answer
    x = 568,621.63

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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.