Home / 1,231,122.96-1,695,188.76-1,115,650.47

Finding the Fourth Proportional to 1,231,122.96, 1,695,188.76 and 1,115,650.47

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Solution

The fourth proportional to 1,231,122.96, 1,695,188.76 and 1,115,650.47 is: 1,536,189.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,122.96 : 1,695,188.76 = 1,115,650.47 : x
  2. Step 2: Convert to fraction form
    1,231,122.96/1,695,188.76 = 1,115,650.47/x
  3. Step 3: Cross multiply
    1,231,122.96x = 1,695,188.76 × 1,115,650.47
  4. Step 4: Simplify right side
    1,231,122.96x = 1,891,238,134,123.60
  5. Step 5: Solve for x
    x = 1,891,238,134,123.60/1,231,122.96
  6. Step 6: Final answer
    x = 1,536,189.48

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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.