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Finding the Fourth Proportional to 3,165,636.16, 4,747,932.60 and 891,318.16

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Solution

The fourth proportional to 3,165,636.16, 4,747,932.60 and 891,318.16 is: 1,336,830.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165,636.16 : 4,747,932.60 = 891,318.16 : x
  2. Step 2: Convert to fraction form
    3,165,636.16/4,747,932.60 = 891,318.16/x
  3. Step 3: Cross multiply
    3,165,636.16x = 4,747,932.60 × 891,318.16
  4. Step 4: Simplify right side
    3,165,636.16x = 4,231,918,548,836.02
  5. Step 5: Solve for x
    x = 4,231,918,548,836.02/3,165,636.16
  6. Step 6: Final answer
    x = 1,336,830.37

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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.