Home / 2,947,868.30-4,421,307.81-818,168.78

Finding the Fourth Proportional to 2,947,868.30, 4,421,307.81 and 818,168.78

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Solution

The fourth proportional to 2,947,868.30, 4,421,307.81 and 818,168.78 is: 1,227,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947,868.30 : 4,421,307.81 = 818,168.78 : x
  2. Step 2: Convert to fraction form
    2,947,868.30/4,421,307.81 = 818,168.78/x
  3. Step 3: Cross multiply
    2,947,868.30x = 4,421,307.81 × 818,168.78
  4. Step 4: Simplify right side
    2,947,868.30x = 3,617,376,016,912.17
  5. Step 5: Solve for x
    x = 3,617,376,016,912.17/2,947,868.30
  6. Step 6: Final answer
    x = 1,227,115.88

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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.