Home / 1,380,542.40-1,904,776.56-807,723.36

Finding the Fourth Proportional to 1,380,542.40, 1,904,776.56 and 807,723.36

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Solution

The fourth proportional to 1,380,542.40, 1,904,776.56 and 807,723.36 is: 1,114,440.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,542.40 : 1,904,776.56 = 807,723.36 : x
  2. Step 2: Convert to fraction form
    1,380,542.40/1,904,776.56 = 807,723.36/x
  3. Step 3: Cross multiply
    1,380,542.40x = 1,904,776.56 × 807,723.36
  4. Step 4: Simplify right side
    1,380,542.40x = 1,538,532,523,092.44
  5. Step 5: Solve for x
    x = 1,538,532,523,092.44/1,380,542.40
  6. Step 6: Final answer
    x = 1,114,440.62

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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.