Home / 725,872.91-1,086,680.18-508,979.57

Finding the Fourth Proportional to 725,872.91, 1,086,680.18 and 508,979.57

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Solution

The fourth proportional to 725,872.91, 1,086,680.18 and 508,979.57 is: 761,976.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,872.91 : 1,086,680.18 = 508,979.57 : x
  2. Step 2: Convert to fraction form
    725,872.91/1,086,680.18 = 508,979.57/x
  3. Step 3: Cross multiply
    725,872.91x = 1,086,680.18 × 508,979.57
  4. Step 4: Simplify right side
    725,872.91x = 553,098,010,743.92
  5. Step 5: Solve for x
    x = 553,098,010,743.92/725,872.91
  6. Step 6: Final answer
    x = 761,976.38

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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.