Home / 1,377,938.20-2,066,972.10-431,339.80

Finding the Fourth Proportional to 1,377,938.20, 2,066,972.10 and 431,339.80

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Solution

The fourth proportional to 1,377,938.20, 2,066,972.10 and 431,339.80 is: 647,029.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,938.20 : 2,066,972.10 = 431,339.80 : x
  2. Step 2: Convert to fraction form
    1,377,938.20/2,066,972.10 = 431,339.80/x
  3. Step 3: Cross multiply
    1,377,938.20x = 2,066,972.10 × 431,339.80
  4. Step 4: Simplify right side
    1,377,938.20x = 891,567,332,219.58
  5. Step 5: Solve for x
    x = 891,567,332,219.58/1,377,938.20
  6. Step 6: Final answer
    x = 647,029.98

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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.