Home / 425,718,010.20-638,577,015.30-418,543,556.70

Finding the Fourth Proportional to 425,718,010.20, 638,577,015.30 and 418,543,556.70

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Solution

The fourth proportional to 425,718,010.20, 638,577,015.30 and 418,543,556.70 is: 627,815,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,010.20 : 638,577,015.30 = 418,543,556.70 : x
  2. Step 2: Convert to fraction form
    425,718,010.20/638,577,015.30 = 418,543,556.70/x
  3. Step 3: Cross multiply
    425,718,010.20x = 638,577,015.30 × 418,543,556.70
  4. Step 4: Simplify right side
    425,718,010.20x = 267,272,295,210,532,288
  5. Step 5: Solve for x
    x = 267,272,295,210,532,288/425,718,010.20
  6. Step 6: Final answer
    x = 627,815,335.05

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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.