Home / 731,137.44-1,006,726.68-639,983.28

Finding the Fourth Proportional to 731,137.44, 1,006,726.68 and 639,983.28

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Solution

The fourth proportional to 731,137.44, 1,006,726.68 and 639,983.28 is: 881,213.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,137.44 : 1,006,726.68 = 639,983.28 : x
  2. Step 2: Convert to fraction form
    731,137.44/1,006,726.68 = 639,983.28/x
  3. Step 3: Cross multiply
    731,137.44x = 1,006,726.68 × 639,983.28
  4. Step 4: Simplify right side
    731,137.44x = 644,288,242,729.91
  5. Step 5: Solve for x
    x = 644,288,242,729.91/731,137.44
  6. Step 6: Final answer
    x = 881,213.58

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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.