Home / 1,538,789.40-2,309,496.30-687,171.60

Finding the Fourth Proportional to 1,538,789.40, 2,309,496.30 and 687,171.60

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Solution

The fourth proportional to 1,538,789.40, 2,309,496.30 and 687,171.60 is: 1,031,343.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,789.40 : 2,309,496.30 = 687,171.60 : x
  2. Step 2: Convert to fraction form
    1,538,789.40/2,309,496.30 = 687,171.60/x
  3. Step 3: Cross multiply
    1,538,789.40x = 2,309,496.30 × 687,171.60
  4. Step 4: Simplify right side
    1,538,789.40x = 1,587,020,267,665.08
  5. Step 5: Solve for x
    x = 1,587,020,267,665.08/1,538,789.40
  6. Step 6: Final answer
    x = 1,031,343.38

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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.