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Finding the Fourth Proportional to 442,579.48, 663,869.62 and 189,695.86

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Solution

The fourth proportional to 442,579.48, 663,869.62 and 189,695.86 is: 284,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,579.48 : 663,869.62 = 189,695.86 : x
  2. Step 2: Convert to fraction form
    442,579.48/663,869.62 = 189,695.86/x
  3. Step 3: Cross multiply
    442,579.48x = 663,869.62 × 189,695.86
  4. Step 4: Simplify right side
    442,579.48x = 125,933,318,493.77
  5. Step 5: Solve for x
    x = 125,933,318,493.77/442,579.48
  6. Step 6: Final answer
    x = 284,543.96

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1.5x scale

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.