Home / 1,278,747,301.20-1,918,121,024.70-309,398,917.20

Finding the Fourth Proportional to 1,278,747,301.20, 1,918,121,024.70 and 309,398,917.20

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Solution

The fourth proportional to 1,278,747,301.20, 1,918,121,024.70 and 309,398,917.20 is: 464,098,393.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,747,301.20 : 1,918,121,024.70 = 309,398,917.20 : x
  2. Step 2: Convert to fraction form
    1,278,747,301.20/1,918,121,024.70 = 309,398,917.20/x
  3. Step 3: Cross multiply
    1,278,747,301.20x = 1,918,121,024.70 × 309,398,917.20
  4. Step 4: Simplify right side
    1,278,747,301.20x = 593,464,568,100,734,464
  5. Step 5: Solve for x
    x = 593,464,568,100,734,464/1,278,747,301.20
  6. Step 6: Final answer
    x = 464,098,393.44

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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.