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Finding the Fourth Proportional to 879,672.60, 1,319,249.70 and 347,016.60

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Solution

The fourth proportional to 879,672.60, 1,319,249.70 and 347,016.60 is: 520,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,672.60 : 1,319,249.70 = 347,016.60 : x
  2. Step 2: Convert to fraction form
    879,672.60/1,319,249.70 = 347,016.60/x
  3. Step 3: Cross multiply
    879,672.60x = 1,319,249.70 × 347,016.60
  4. Step 4: Simplify right side
    879,672.60x = 457,801,545,445.02
  5. Step 5: Solve for x
    x = 457,801,545,445.02/879,672.60
  6. Step 6: Final answer
    x = 520,422.65

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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.