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Finding the Fourth Proportional to 440,676, 608,184.72 and 261,828

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Solution

The fourth proportional to 440,676, 608,184.72 and 261,828 is: 361,353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,676 : 608,184.72 = 261,828 : x
  2. Step 2: Convert to fraction form
    440,676/608,184.72 = 261,828/x
  3. Step 3: Cross multiply
    440,676x = 608,184.72 × 261,828
  4. Step 4: Simplify right side
    440,676x = 159,239,788,868.16
  5. Step 5: Solve for x
    x = 159,239,788,868.16/440,676
  6. Step 6: Final answer
    x = 361,353.44

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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.