Home / 687,419,422.48-948,719,581.20-386,054,261.44

Finding the Fourth Proportional to 687,419,422.48, 948,719,581.20 and 386,054,261.44

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Solution

The fourth proportional to 687,419,422.48, 948,719,581.20 and 386,054,261.44 is: 532,800,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,419,422.48 : 948,719,581.20 = 386,054,261.44 : x
  2. Step 2: Convert to fraction form
    687,419,422.48/948,719,581.20 = 386,054,261.44/x
  3. Step 3: Cross multiply
    687,419,422.48x = 948,719,581.20 × 386,054,261.44
  4. Step 4: Simplify right side
    687,419,422.48x = 366,257,237,233,832,128
  5. Step 5: Solve for x
    x = 366,257,237,233,832,128/687,419,422.48
  6. Step 6: Final answer
    x = 532,800,245.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.