Home / 731,451.94-1,007,160.69-640,297.78

Finding the Fourth Proportional to 731,451.94, 1,007,160.69 and 640,297.78

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Solution

The fourth proportional to 731,451.94, 1,007,160.69 and 640,297.78 is: 881,647.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,451.94 : 1,007,160.69 = 640,297.78 : x
  2. Step 2: Convert to fraction form
    731,451.94/1,007,160.69 = 640,297.78/x
  3. Step 3: Cross multiply
    731,451.94x = 1,007,160.69 × 640,297.78
  4. Step 4: Simplify right side
    731,451.94x = 644,882,753,910.27
  5. Step 5: Solve for x
    x = 644,882,753,910.27/731,451.94
  6. Step 6: Final answer
    x = 881,647.47

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1.5x scale

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.