Home / 725,189.30-1,087,476.37-345,670.97

Finding the Fourth Proportional to 725,189.30, 1,087,476.37 and 345,670.97

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Solution

The fourth proportional to 725,189.30, 1,087,476.37 and 345,670.97 is: 518,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,189.30 : 1,087,476.37 = 345,670.97 : x
  2. Step 2: Convert to fraction form
    725,189.30/1,087,476.37 = 345,670.97/x
  3. Step 3: Cross multiply
    725,189.30x = 1,087,476.37 × 345,670.97
  4. Step 4: Simplify right side
    725,189.30x = 375,909,013,524.49
  5. Step 5: Solve for x
    x = 375,909,013,524.49/725,189.30
  6. Step 6: Final answer
    x = 518,359.85

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1.5x scale

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.