Home / 1,981,567,952.20-2,972,351,928.30-1,328,533,251.40

Finding the Fourth Proportional to 1,981,567,952.20, 2,972,351,928.30 and 1,328,533,251.40

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Solution

The fourth proportional to 1,981,567,952.20, 2,972,351,928.30 and 1,328,533,251.40 is: 1,992,799,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,567,952.20 : 2,972,351,928.30 = 1,328,533,251.40 : x
  2. Step 2: Convert to fraction form
    1,981,567,952.20/2,972,351,928.30 = 1,328,533,251.40/x
  3. Step 3: Cross multiply
    1,981,567,952.20x = 2,972,351,928.30 × 1,328,533,251.40
  4. Step 4: Simplify right side
    1,981,567,952.20x = 3,948,868,371,609,459,200
  5. Step 5: Solve for x
    x = 3,948,868,371,609,459,200/1,981,567,952.20
  6. Step 6: Final answer
    x = 1,992,799,877.10

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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.