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Finding the Fourth Proportional to 1,978,951.97, 2,730,958.95 and 1,073,533.97

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Solution

The fourth proportional to 1,978,951.97, 2,730,958.95 and 1,073,533.97 is: 1,481,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,951.97 : 2,730,958.95 = 1,073,533.97 : x
  2. Step 2: Convert to fraction form
    1,978,951.97/2,730,958.95 = 1,073,533.97/x
  3. Step 3: Cross multiply
    1,978,951.97x = 2,730,958.95 × 1,073,533.97
  4. Step 4: Simplify right side
    1,978,951.97x = 2,931,777,203,500.53
  5. Step 5: Solve for x
    x = 2,931,777,203,500.53/1,978,951.97
  6. Step 6: Final answer
    x = 1,481,479.72

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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.