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Finding the Fourth Proportional to 555,790.11, 766,990.85 and 301,141.29

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Solution

The fourth proportional to 555,790.11, 766,990.85 and 301,141.29 is: 415,575.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,790.11 : 766,990.85 = 301,141.29 : x
  2. Step 2: Convert to fraction form
    555,790.11/766,990.85 = 301,141.29/x
  3. Step 3: Cross multiply
    555,790.11x = 766,990.85 × 301,141.29
  4. Step 4: Simplify right side
    555,790.11x = 230,972,613,987.20
  5. Step 5: Solve for x
    x = 230,972,613,987.20/555,790.11
  6. Step 6: Final answer
    x = 415,575.25

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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.