Home / 731,129.94-1,006,716.33-639,975.78

Finding the Fourth Proportional to 731,129.94, 1,006,716.33 and 639,975.78

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Solution

The fourth proportional to 731,129.94, 1,006,716.33 and 639,975.78 is: 881,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,129.94 : 1,006,716.33 = 639,975.78 : x
  2. Step 2: Convert to fraction form
    731,129.94/1,006,716.33 = 639,975.78/x
  3. Step 3: Cross multiply
    731,129.94x = 1,006,716.33 × 639,975.78
  4. Step 4: Simplify right side
    731,129.94x = 644,274,068,530.49
  5. Step 5: Solve for x
    x = 644,274,068,530.49/731,129.94
  6. Step 6: Final answer
    x = 881,203.24

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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.