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Finding the Fourth Proportional to 690,147, 952,423.88 and 375,839.51

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Solution

The fourth proportional to 690,147, 952,423.88 and 375,839.51 is: 518,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,147 : 952,423.88 = 375,839.51 : x
  2. Step 2: Convert to fraction form
    690,147/952,423.88 = 375,839.51/x
  3. Step 3: Cross multiply
    690,147x = 952,423.88 × 375,839.51
  4. Step 4: Simplify right side
    690,147x = 357,958,517,730.18
  5. Step 5: Solve for x
    x = 357,958,517,730.18/690,147
  6. Step 6: Final answer
    x = 518,669.96

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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.