Home / 1,272,079.72-1,755,512.10-699,140.20

Finding the Fourth Proportional to 1,272,079.72, 1,755,512.10 and 699,140.20

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Solution

The fourth proportional to 1,272,079.72, 1,755,512.10 and 699,140.20 is: 964,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,079.72 : 1,755,512.10 = 699,140.20 : x
  2. Step 2: Convert to fraction form
    1,272,079.72/1,755,512.10 = 699,140.20/x
  3. Step 3: Cross multiply
    1,272,079.72x = 1,755,512.10 × 699,140.20
  4. Step 4: Simplify right side
    1,272,079.72x = 1,227,349,080,696.42
  5. Step 5: Solve for x
    x = 1,227,349,080,696.42/1,272,079.72
  6. Step 6: Final answer
    x = 964,836.61

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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.