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Finding the Fourth Proportional to 442,512.96, 663,267.10 and 389,101.56

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Solution

The fourth proportional to 442,512.96, 663,267.10 and 389,101.56 is: 583,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,512.96 : 663,267.10 = 389,101.56 : x
  2. Step 2: Convert to fraction form
    442,512.96/663,267.10 = 389,101.56/x
  3. Step 3: Cross multiply
    442,512.96x = 663,267.10 × 389,101.56
  4. Step 4: Simplify right side
    442,512.96x = 258,078,263,306.68
  5. Step 5: Solve for x
    x = 258,078,263,306.68/442,512.96
  6. Step 6: Final answer
    x = 583,210.63

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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.