Home / 1,187,962.74-1,781,943.17-429,626.57

Finding the Fourth Proportional to 1,187,962.74, 1,781,943.17 and 429,626.57

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Solution

The fourth proportional to 1,187,962.74, 1,781,943.17 and 429,626.57 is: 644,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,962.74 : 1,781,943.17 = 429,626.57 : x
  2. Step 2: Convert to fraction form
    1,187,962.74/1,781,943.17 = 429,626.57/x
  3. Step 3: Cross multiply
    1,187,962.74x = 1,781,943.17 × 429,626.57
  4. Step 4: Simplify right side
    1,187,962.74x = 765,570,121,004.18
  5. Step 5: Solve for x
    x = 765,570,121,004.18/1,187,962.74
  6. Step 6: Final answer
    x = 644,439.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.