Home / 731,130.69-1,006,717.35-639,976.53

Finding the Fourth Proportional to 731,130.69, 1,006,717.35 and 639,976.53

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Solution

The fourth proportional to 731,130.69, 1,006,717.35 and 639,976.53 is: 881,204.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,130.69 : 1,006,717.35 = 639,976.53 : x
  2. Step 2: Convert to fraction form
    731,130.69/1,006,717.35 = 639,976.53/x
  3. Step 3: Cross multiply
    731,130.69x = 1,006,717.35 × 639,976.53
  4. Step 4: Simplify right side
    731,130.69x = 644,275,476,343.80
  5. Step 5: Solve for x
    x = 644,275,476,343.80/731,130.69
  6. Step 6: Final answer
    x = 881,204.26

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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.