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Finding the Fourth Proportional to 643,892.48, 888,627.84 and 375,706.88

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Solution

The fourth proportional to 643,892.48, 888,627.84 and 375,706.88 is: 518,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,892.48 : 888,627.84 = 375,706.88 : x
  2. Step 2: Convert to fraction form
    643,892.48/888,627.84 = 375,706.88/x
  3. Step 3: Cross multiply
    643,892.48x = 888,627.84 × 375,706.88
  4. Step 4: Simplify right side
    643,892.48x = 333,863,593,247.54
  5. Step 5: Solve for x
    x = 333,863,593,247.54/643,892.48
  6. Step 6: Final answer
    x = 518,508.30

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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.