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Finding the Fourth Proportional to 885,198.72, 1,327,472.76 and 316,426.34

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Solution

The fourth proportional to 885,198.72, 1,327,472.76 and 316,426.34 is: 474,523.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,198.72 : 1,327,472.76 = 316,426.34 : x
  2. Step 2: Convert to fraction form
    885,198.72/1,327,472.76 = 316,426.34/x
  3. Step 3: Cross multiply
    885,198.72x = 1,327,472.76 × 316,426.34
  4. Step 4: Simplify right side
    885,198.72x = 420,047,346,896.50
  5. Step 5: Solve for x
    x = 420,047,346,896.50/885,198.72
  6. Step 6: Final answer
    x = 474,523.22

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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.