Home / 826,212.78-1,239,319.20-265,640.94

Finding the Fourth Proportional to 826,212.78, 1,239,319.20 and 265,640.94

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Solution

The fourth proportional to 826,212.78, 1,239,319.20 and 265,640.94 is: 398,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,212.78 : 1,239,319.20 = 265,640.94 : x
  2. Step 2: Convert to fraction form
    826,212.78/1,239,319.20 = 265,640.94/x
  3. Step 3: Cross multiply
    826,212.78x = 1,239,319.20 × 265,640.94
  4. Step 4: Simplify right side
    826,212.78x = 329,213,917,248.05
  5. Step 5: Solve for x
    x = 329,213,917,248.05/826,212.78
  6. Step 6: Final answer
    x = 398,461.42

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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.