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Finding the Fourth Proportional to 479,766.38, 662,135.92 and 278,562.38

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Solution

The fourth proportional to 479,766.38, 662,135.92 and 278,562.38 is: 384,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,766.38 : 662,135.92 = 278,562.38 : x
  2. Step 2: Convert to fraction form
    479,766.38/662,135.92 = 278,562.38/x
  3. Step 3: Cross multiply
    479,766.38x = 662,135.92 × 278,562.38
  4. Step 4: Simplify right side
    479,766.38x = 184,446,153,751.60
  5. Step 5: Solve for x
    x = 184,446,153,751.60/479,766.38
  6. Step 6: Final answer
    x = 384,449.94

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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.