Home / 1,331,984.84-1,838,101.73-728,359.88

Finding the Fourth Proportional to 1,331,984.84, 1,838,101.73 and 728,359.88

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Solution

The fourth proportional to 1,331,984.84, 1,838,101.73 and 728,359.88 is: 1,005,116.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,984.84 : 1,838,101.73 = 728,359.88 : x
  2. Step 2: Convert to fraction form
    1,331,984.84/1,838,101.73 = 728,359.88/x
  3. Step 3: Cross multiply
    1,331,984.84x = 1,838,101.73 × 728,359.88
  4. Step 4: Simplify right side
    1,331,984.84x = 1,338,799,542,658.28
  5. Step 5: Solve for x
    x = 1,338,799,542,658.28/1,331,984.84
  6. Step 6: Final answer
    x = 1,005,116.21

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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.