Home / 1,222,902.20-1,687,636.68-679,060.92

Finding the Fourth Proportional to 1,222,902.20, 1,687,636.68 and 679,060.92

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Solution

The fourth proportional to 1,222,902.20, 1,687,636.68 and 679,060.92 is: 937,121.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,902.20 : 1,687,636.68 = 679,060.92 : x
  2. Step 2: Convert to fraction form
    1,222,902.20/1,687,636.68 = 679,060.92/x
  3. Step 3: Cross multiply
    1,222,902.20x = 1,687,636.68 × 679,060.92
  4. Step 4: Simplify right side
    1,222,902.20x = 1,146,008,116,546.55
  5. Step 5: Solve for x
    x = 1,146,008,116,546.55/1,222,902.20
  6. Step 6: Final answer
    x = 937,121.64

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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.