Home / 853,123,066.80-1,279,684,600.20-771,493,729.20

Finding the Fourth Proportional to 853,123,066.80, 1,279,684,600.20 and 771,493,729.20

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Solution

The fourth proportional to 853,123,066.80, 1,279,684,600.20 and 771,493,729.20 is: 1,157,240,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,123,066.80 : 1,279,684,600.20 = 771,493,729.20 : x
  2. Step 2: Convert to fraction form
    853,123,066.80/1,279,684,600.20 = 771,493,729.20/x
  3. Step 3: Cross multiply
    853,123,066.80x = 1,279,684,600.20 × 771,493,729.20
  4. Step 4: Simplify right side
    853,123,066.80x = 987,268,644,408,109,184
  5. Step 5: Solve for x
    x = 987,268,644,408,109,184/853,123,066.80
  6. Step 6: Final answer
    x = 1,157,240,593.80

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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.