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Finding the Fourth Proportional to 504,405.92, 696,079.92 and 278,055.20

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Solution

The fourth proportional to 504,405.92, 696,079.92 and 278,055.20 is: 383,716.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,405.92 : 696,079.92 = 278,055.20 : x
  2. Step 2: Convert to fraction form
    504,405.92/696,079.92 = 278,055.20/x
  3. Step 3: Cross multiply
    504,405.92x = 696,079.92 × 278,055.20
  4. Step 4: Simplify right side
    504,405.92x = 193,548,641,371.58
  5. Step 5: Solve for x
    x = 193,548,641,371.58/504,405.92
  6. Step 6: Final answer
    x = 383,716.04

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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.