Home / 391,633,908.78-540,428,151.21-226,646,278.86

Finding the Fourth Proportional to 391,633,908.78, 540,428,151.21 and 226,646,278.86

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Solution

The fourth proportional to 391,633,908.78, 540,428,151.21 and 226,646,278.86 is: 312,756,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,633,908.78 : 540,428,151.21 = 226,646,278.86 : x
  2. Step 2: Convert to fraction form
    391,633,908.78/540,428,151.21 = 226,646,278.86/x
  3. Step 3: Cross multiply
    391,633,908.78x = 540,428,151.21 × 226,646,278.86
  4. Step 4: Simplify right side
    391,633,908.78x = 122,486,029,462,935,920
  5. Step 5: Solve for x
    x = 122,486,029,462,935,920/391,633,908.78
  6. Step 6: Final answer
    x = 312,756,446.05

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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.