Home / 1,138,439.31-1,571,265.54-731,055.88

Finding the Fourth Proportional to 1,138,439.31, 1,571,265.54 and 731,055.88

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Solution

The fourth proportional to 1,138,439.31, 1,571,265.54 and 731,055.88 is: 1,008,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,439.31 : 1,571,265.54 = 731,055.88 : x
  2. Step 2: Convert to fraction form
    1,138,439.31/1,571,265.54 = 731,055.88/x
  3. Step 3: Cross multiply
    1,138,439.31x = 1,571,265.54 × 731,055.88
  4. Step 4: Simplify right side
    1,138,439.31x = 1,148,682,914,022.46
  5. Step 5: Solve for x
    x = 1,148,682,914,022.46/1,138,439.31
  6. Step 6: Final answer
    x = 1,008,997.94

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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.