Home / 1,122,988.15-1,550,002.76-639,840.97

Finding the Fourth Proportional to 1,122,988.15, 1,550,002.76 and 639,840.97

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Solution

The fourth proportional to 1,122,988.15, 1,550,002.76 and 639,840.97 is: 883,139.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,988.15 : 1,550,002.76 = 639,840.97 : x
  2. Step 2: Convert to fraction form
    1,122,988.15/1,550,002.76 = 639,840.97/x
  3. Step 3: Cross multiply
    1,122,988.15x = 1,550,002.76 × 639,840.97
  4. Step 4: Simplify right side
    1,122,988.15x = 991,755,266,261.87
  5. Step 5: Solve for x
    x = 991,755,266,261.87/1,122,988.15
  6. Step 6: Final answer
    x = 883,139.56

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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.