Home / 1,391,241.64-2,087,161.70-431,678

Finding the Fourth Proportional to 1,391,241.64, 2,087,161.70 and 431,678

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Solution

The fourth proportional to 1,391,241.64, 2,087,161.70 and 431,678 is: 647,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,241.64 : 2,087,161.70 = 431,678 : x
  2. Step 2: Convert to fraction form
    1,391,241.64/2,087,161.70 = 431,678/x
  3. Step 3: Cross multiply
    1,391,241.64x = 2,087,161.70 × 431,678
  4. Step 4: Simplify right side
    1,391,241.64x = 900,981,788,332.60
  5. Step 5: Solve for x
    x = 900,981,788,332.60/1,391,241.64
  6. Step 6: Final answer
    x = 647,609.85

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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.