Home / 725,304.82-1,087,035.95-409,939.06

Finding the Fourth Proportional to 725,304.82, 1,087,035.95 and 409,939.06

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Solution

The fourth proportional to 725,304.82, 1,087,035.95 and 409,939.06 is: 614,387.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,304.82 : 1,087,035.95 = 409,939.06 : x
  2. Step 2: Convert to fraction form
    725,304.82/1,087,035.95 = 409,939.06/x
  3. Step 3: Cross multiply
    725,304.82x = 1,087,035.95 × 409,939.06
  4. Step 4: Simplify right side
    725,304.82x = 445,618,495,529.21
  5. Step 5: Solve for x
    x = 445,618,495,529.21/725,304.82
  6. Step 6: Final answer
    x = 614,387.89

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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.