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Finding the Fourth Proportional to 715,743, 1,073,620.98 and 217,107

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Solution

The fourth proportional to 715,743, 1,073,620.98 and 217,107 is: 325,662.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,743 : 1,073,620.98 = 217,107 : x
  2. Step 2: Convert to fraction form
    715,743/1,073,620.98 = 217,107/x
  3. Step 3: Cross multiply
    715,743x = 1,073,620.98 × 217,107
  4. Step 4: Simplify right side
    715,743x = 233,090,630,104.86
  5. Step 5: Solve for x
    x = 233,090,630,104.86/715,743
  6. Step 6: Final answer
    x = 325,662.47

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1.5x scale

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.