Home / 725,787.04-1,086,351.28-387,983.20

Finding the Fourth Proportional to 725,787.04, 1,086,351.28 and 387,983.20

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Solution

The fourth proportional to 725,787.04, 1,086,351.28 and 387,983.20 is: 580,729.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,787.04 : 1,086,351.28 = 387,983.20 : x
  2. Step 2: Convert to fraction form
    725,787.04/1,086,351.28 = 387,983.20/x
  3. Step 3: Cross multiply
    725,787.04x = 1,086,351.28 × 387,983.20
  4. Step 4: Simplify right side
    725,787.04x = 421,486,045,938.50
  5. Step 5: Solve for x
    x = 421,486,045,938.50/725,787.04
  6. Step 6: Final answer
    x = 580,729.64

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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.