Home / 689,726.24-951,822-387,920

Finding the Fourth Proportional to 689,726.24, 951,822 and 387,920

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Solution

The fourth proportional to 689,726.24, 951,822 and 387,920 is: 535,329.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,726.24 : 951,822 = 387,920 : x
  2. Step 2: Convert to fraction form
    689,726.24/951,822 = 387,920/x
  3. Step 3: Cross multiply
    689,726.24x = 951,822 × 387,920
  4. Step 4: Simplify right side
    689,726.24x = 369,230,790,240
  5. Step 5: Solve for x
    x = 369,230,790,240/689,726.24
  6. Step 6: Final answer
    x = 535,329.48

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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.