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Finding the Fourth Proportional to 479,769.88, 662,140.75 and 278,565.88

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Solution

The fourth proportional to 479,769.88, 662,140.75 and 278,565.88 is: 384,454.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,769.88 : 662,140.75 = 278,565.88 : x
  2. Step 2: Convert to fraction form
    479,769.88/662,140.75 = 278,565.88/x
  3. Step 3: Cross multiply
    479,769.88x = 662,140.75 × 278,565.88
  4. Step 4: Simplify right side
    479,769.88x = 184,449,817,396.91
  5. Step 5: Solve for x
    x = 184,449,817,396.91/479,769.88
  6. Step 6: Final answer
    x = 384,454.77

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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.