Home / 1,377,910.20-2,066,930.10-431,311.80

Finding the Fourth Proportional to 1,377,910.20, 2,066,930.10 and 431,311.80

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Solution

The fourth proportional to 1,377,910.20, 2,066,930.10 and 431,311.80 is: 646,987.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,910.20 : 2,066,930.10 = 431,311.80 : x
  2. Step 2: Convert to fraction form
    1,377,910.20/2,066,930.10 = 431,311.80/x
  3. Step 3: Cross multiply
    1,377,910.20x = 2,066,930.10 × 431,311.80
  4. Step 4: Simplify right side
    1,377,910.20x = 891,491,341,905.18
  5. Step 5: Solve for x
    x = 891,491,341,905.18/1,377,910.20
  6. Step 6: Final answer
    x = 646,987.98

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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.