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Finding the Fourth Proportional to 1,998,672.80, 2,996,972.40 and 735,850.40

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Solution

The fourth proportional to 1,998,672.80, 2,996,972.40 and 735,850.40 is: 1,103,393.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998,672.80 : 2,996,972.40 = 735,850.40 : x
  2. Step 2: Convert to fraction form
    1,998,672.80/2,996,972.40 = 735,850.40/x
  3. Step 3: Cross multiply
    1,998,672.80x = 2,996,972.40 × 735,850.40
  4. Step 4: Simplify right side
    1,998,672.80x = 2,205,323,339,328.96
  5. Step 5: Solve for x
    x = 2,205,323,339,328.96/1,998,672.80
  6. Step 6: Final answer
    x = 1,103,393.88

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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.