Home / 425,718,009.70-638,577,014.55-418,543,556.20

Finding the Fourth Proportional to 425,718,009.70, 638,577,014.55 and 418,543,556.20

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Solution

The fourth proportional to 425,718,009.70, 638,577,014.55 and 418,543,556.20 is: 627,815,334.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,009.70 : 638,577,014.55 = 418,543,556.20 : x
  2. Step 2: Convert to fraction form
    425,718,009.70/638,577,014.55 = 418,543,556.20/x
  3. Step 3: Cross multiply
    425,718,009.70x = 638,577,014.55 × 418,543,556.20
  4. Step 4: Simplify right side
    425,718,009.70x = 267,272,294,577,336,128
  5. Step 5: Solve for x
    x = 267,272,294,577,336,128/425,718,009.70
  6. Step 6: Final answer
    x = 627,815,334.30

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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.