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Finding the Fourth Proportional to 642,472.72, 886,588.44 and 370,552

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Solution

The fourth proportional to 642,472.72, 886,588.44 and 370,552 is: 511,347.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,472.72 : 886,588.44 = 370,552 : x
  2. Step 2: Convert to fraction form
    642,472.72/886,588.44 = 370,552/x
  3. Step 3: Cross multiply
    642,472.72x = 886,588.44 × 370,552
  4. Step 4: Simplify right side
    642,472.72x = 328,527,119,618.88
  5. Step 5: Solve for x
    x = 328,527,119,618.88/642,472.72
  6. Step 6: Final answer
    x = 511,347.97

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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.