Home / 865,490.72-1,298,359.92-266,502.56

Finding the Fourth Proportional to 865,490.72, 1,298,359.92 and 266,502.56

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Solution

The fourth proportional to 865,490.72, 1,298,359.92 and 266,502.56 is: 399,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,490.72 : 1,298,359.92 = 266,502.56 : x
  2. Step 2: Convert to fraction form
    865,490.72/1,298,359.92 = 266,502.56/x
  3. Step 3: Cross multiply
    865,490.72x = 1,298,359.92 × 266,502.56
  4. Step 4: Simplify right side
    865,490.72x = 346,016,242,481.40
  5. Step 5: Solve for x
    x = 346,016,242,481.40/865,490.72
  6. Step 6: Final answer
    x = 399,791.97

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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.