Home / 731,085.94-1,006,655.61-639,931.78

Finding the Fourth Proportional to 731,085.94, 1,006,655.61 and 639,931.78

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Solution

The fourth proportional to 731,085.94, 1,006,655.61 and 639,931.78 is: 881,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,085.94 : 1,006,655.61 = 639,931.78 : x
  2. Step 2: Convert to fraction form
    731,085.94/1,006,655.61 = 639,931.78/x
  3. Step 3: Cross multiply
    731,085.94x = 1,006,655.61 × 639,931.78
  4. Step 4: Simplify right side
    731,085.94x = 644,190,916,354.29
  5. Step 5: Solve for x
    x = 644,190,916,354.29/731,085.94
  6. Step 6: Final answer
    x = 881,142.53

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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.