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Finding the Fourth Proportional to 668,855.68, 1,003,387.85 and 219,474.26

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Solution

The fourth proportional to 668,855.68, 1,003,387.85 and 219,474.26 is: 329,245.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,855.68 : 1,003,387.85 = 219,474.26 : x
  2. Step 2: Convert to fraction form
    668,855.68/1,003,387.85 = 219,474.26/x
  3. Step 3: Cross multiply
    668,855.68x = 1,003,387.85 × 219,474.26
  4. Step 4: Simplify right side
    668,855.68x = 220,217,805,577.71
  5. Step 5: Solve for x
    x = 220,217,805,577.71/668,855.68
  6. Step 6: Final answer
    x = 329,245.63

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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.