Home / 1,287,157.52-1,776,159.97-763,777.93

Finding the Fourth Proportional to 1,287,157.52, 1,776,159.97 and 763,777.93

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Solution

The fourth proportional to 1,287,157.52, 1,776,159.97 and 763,777.93 is: 1,053,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,157.52 : 1,776,159.97 = 763,777.93 : x
  2. Step 2: Convert to fraction form
    1,287,157.52/1,776,159.97 = 763,777.93/x
  3. Step 3: Cross multiply
    1,287,157.52x = 1,776,159.97 × 763,777.93
  4. Step 4: Simplify right side
    1,287,157.52x = 1,356,591,781,416.57
  5. Step 5: Solve for x
    x = 1,356,591,781,416.57/1,287,157.52
  6. Step 6: Final answer
    x = 1,053,943.87

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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.