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Finding the Fourth Proportional to 448,861.86, 618,869.08 and 287,451.54

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Solution

The fourth proportional to 448,861.86, 618,869.08 and 287,451.54 is: 396,324.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,861.86 : 618,869.08 = 287,451.54 : x
  2. Step 2: Convert to fraction form
    448,861.86/618,869.08 = 287,451.54/x
  3. Step 3: Cross multiply
    448,861.86x = 618,869.08 × 287,451.54
  4. Step 4: Simplify right side
    448,861.86x = 177,894,870,104.38
  5. Step 5: Solve for x
    x = 177,894,870,104.38/448,861.86
  6. Step 6: Final answer
    x = 396,324.32

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1.5x scale

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.