Home / 1,098,964.20-1,648,640.70-389,404.20

Finding the Fourth Proportional to 1,098,964.20, 1,648,640.70 and 389,404.20

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Solution

The fourth proportional to 1,098,964.20, 1,648,640.70 and 389,404.20 is: 584,175.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,964.20 : 1,648,640.70 = 389,404.20 : x
  2. Step 2: Convert to fraction form
    1,098,964.20/1,648,640.70 = 389,404.20/x
  3. Step 3: Cross multiply
    1,098,964.20x = 1,648,640.70 × 389,404.20
  4. Step 4: Simplify right side
    1,098,964.20x = 641,987,612,870.94
  5. Step 5: Solve for x
    x = 641,987,612,870.94/1,098,964.20
  6. Step 6: Final answer
    x = 584,175.18

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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.