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Finding the Fourth Proportional to 1,279,922.82, 1,920,933.63 and 649,017.06

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Solution

The fourth proportional to 1,279,922.82, 1,920,933.63 and 649,017.06 is: 974,057.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,922.82 : 1,920,933.63 = 649,017.06 : x
  2. Step 2: Convert to fraction form
    1,279,922.82/1,920,933.63 = 649,017.06/x
  3. Step 3: Cross multiply
    1,279,922.82x = 1,920,933.63 × 649,017.06
  4. Step 4: Simplify right side
    1,279,922.82x = 1,246,718,696,997.73
  5. Step 5: Solve for x
    x = 1,246,718,696,997.73/1,279,922.82
  6. Step 6: Final answer
    x = 974,057.71

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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.