Home / 1,377,930.20-2,066,960.10-431,331.80

Finding the Fourth Proportional to 1,377,930.20, 2,066,960.10 and 431,331.80

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Solution

The fourth proportional to 1,377,930.20, 2,066,960.10 and 431,331.80 is: 647,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,930.20 : 2,066,960.10 = 431,331.80 : x
  2. Step 2: Convert to fraction form
    1,377,930.20/2,066,960.10 = 431,331.80/x
  3. Step 3: Cross multiply
    1,377,930.20x = 2,066,960.10 × 431,331.80
  4. Step 4: Simplify right side
    1,377,930.20x = 891,545,620,461.18
  5. Step 5: Solve for x
    x = 891,545,620,461.18/1,377,930.20
  6. Step 6: Final answer
    x = 647,017.98

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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.