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Finding the Fourth Proportional to 615,983.16, 850,070.70 and 361,517.88

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Solution

The fourth proportional to 615,983.16, 850,070.70 and 361,517.88 is: 498,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,983.16 : 850,070.70 = 361,517.88 : x
  2. Step 2: Convert to fraction form
    615,983.16/850,070.70 = 361,517.88/x
  3. Step 3: Cross multiply
    615,983.16x = 850,070.70 × 361,517.88
  4. Step 4: Simplify right side
    615,983.16x = 307,315,757,314.12
  5. Step 5: Solve for x
    x = 307,315,757,314.12/615,983.16
  6. Step 6: Final answer
    x = 498,902.86

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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.