Home / 782,102.88-1,079,170.56-455,484.96

Finding the Fourth Proportional to 782,102.88, 1,079,170.56 and 455,484.96

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Solution

The fourth proportional to 782,102.88, 1,079,170.56 and 455,484.96 is: 628,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,102.88 : 1,079,170.56 = 455,484.96 : x
  2. Step 2: Convert to fraction form
    782,102.88/1,079,170.56 = 455,484.96/x
  3. Step 3: Cross multiply
    782,102.88x = 1,079,170.56 × 455,484.96
  4. Step 4: Simplify right side
    782,102.88x = 491,545,959,354.78
  5. Step 5: Solve for x
    x = 491,545,959,354.78/782,102.88
  6. Step 6: Final answer
    x = 628,492.71

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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.