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Finding the Fourth Proportional to 679,872.48, 1,019,808 and 323,806.56

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Solution

The fourth proportional to 679,872.48, 1,019,808 and 323,806.56 is: 485,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,872.48 : 1,019,808 = 323,806.56 : x
  2. Step 2: Convert to fraction form
    679,872.48/1,019,808 = 323,806.56/x
  3. Step 3: Cross multiply
    679,872.48x = 1,019,808 × 323,806.56
  4. Step 4: Simplify right side
    679,872.48x = 330,220,520,340.48
  5. Step 5: Solve for x
    x = 330,220,520,340.48/679,872.48
  6. Step 6: Final answer
    x = 485,709.50

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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.