Home / 1,119,691.20-1,679,031.36-320,789.88

Finding the Fourth Proportional to 1,119,691.20, 1,679,031.36 and 320,789.88

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Solution

The fourth proportional to 1,119,691.20, 1,679,031.36 and 320,789.88 is: 481,040.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,691.20 : 1,679,031.36 = 320,789.88 : x
  2. Step 2: Convert to fraction form
    1,119,691.20/1,679,031.36 = 320,789.88/x
  3. Step 3: Cross multiply
    1,119,691.20x = 1,679,031.36 × 320,789.88
  4. Step 4: Simplify right side
    1,119,691.20x = 538,616,268,490.64
  5. Step 5: Solve for x
    x = 538,616,268,490.64/1,119,691.20
  6. Step 6: Final answer
    x = 481,040.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.