Home / 855,110.30-1,281,819.45-405,040.10

Finding the Fourth Proportional to 855,110.30, 1,281,819.45 and 405,040.10

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Solution

The fourth proportional to 855,110.30, 1,281,819.45 and 405,040.10 is: 607,159.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,110.30 : 1,281,819.45 = 405,040.10 : x
  2. Step 2: Convert to fraction form
    855,110.30/1,281,819.45 = 405,040.10/x
  3. Step 3: Cross multiply
    855,110.30x = 1,281,819.45 × 405,040.10
  4. Step 4: Simplify right side
    855,110.30x = 519,188,278,209.95
  5. Step 5: Solve for x
    x = 519,188,278,209.95/855,110.30
  6. Step 6: Final answer
    x = 607,159.43

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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.