Home / 815,575.72-1,221,983.10-499,372.36

Finding the Fourth Proportional to 815,575.72, 1,221,983.10 and 499,372.36

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Solution

The fourth proportional to 815,575.72, 1,221,983.10 and 499,372.36 is: 748,213.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,575.72 : 1,221,983.10 = 499,372.36 : x
  2. Step 2: Convert to fraction form
    815,575.72/1,221,983.10 = 499,372.36/x
  3. Step 3: Cross multiply
    815,575.72x = 1,221,983.10 × 499,372.36
  4. Step 4: Simplify right side
    815,575.72x = 610,224,584,527.12
  5. Step 5: Solve for x
    x = 610,224,584,527.12/815,575.72
  6. Step 6: Final answer
    x = 748,213.28

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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.