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Finding the Fourth Proportional to 693,384, 956,869.92 and 375,432

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Solution

The fourth proportional to 693,384, 956,869.92 and 375,432 is: 518,096.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,384 : 956,869.92 = 375,432 : x
  2. Step 2: Convert to fraction form
    693,384/956,869.92 = 375,432/x
  3. Step 3: Cross multiply
    693,384x = 956,869.92 × 375,432
  4. Step 4: Simplify right side
    693,384x = 359,239,587,805.44
  5. Step 5: Solve for x
    x = 359,239,587,805.44/693,384
  6. Step 6: Final answer
    x = 518,096.16

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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.