Home / 1,115,139.61-1,538,862.73-656,281.23

Finding the Fourth Proportional to 1,115,139.61, 1,538,862.73 and 656,281.23

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Solution

The fourth proportional to 1,115,139.61, 1,538,862.73 and 656,281.23 is: 905,650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,139.61 : 1,538,862.73 = 656,281.23 : x
  2. Step 2: Convert to fraction form
    1,115,139.61/1,538,862.73 = 656,281.23/x
  3. Step 3: Cross multiply
    1,115,139.61x = 1,538,862.73 × 656,281.23
  4. Step 4: Simplify right side
    1,115,139.61x = 1,009,926,725,245.56
  5. Step 5: Solve for x
    x = 1,009,926,725,245.56/1,115,139.61
  6. Step 6: Final answer
    x = 905,650.48

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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.