Home / 1,420,481.61-1,959,640.43-869,223.57

Finding the Fourth Proportional to 1,420,481.61, 1,959,640.43 and 869,223.57

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Solution

The fourth proportional to 1,420,481.61, 1,959,640.43 and 869,223.57 is: 1,199,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,481.61 : 1,959,640.43 = 869,223.57 : x
  2. Step 2: Convert to fraction form
    1,420,481.61/1,959,640.43 = 869,223.57/x
  3. Step 3: Cross multiply
    1,420,481.61x = 1,959,640.43 × 869,223.57
  4. Step 4: Simplify right side
    1,420,481.61x = 1,703,365,636,336.62
  5. Step 5: Solve for x
    x = 1,703,365,636,336.62/1,420,481.61
  6. Step 6: Final answer
    x = 1,199,146.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.