Home / 878,418.78-1,212,218.31-476,010.78

Finding the Fourth Proportional to 878,418.78, 1,212,218.31 and 476,010.78

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Solution

The fourth proportional to 878,418.78, 1,212,218.31 and 476,010.78 is: 656,895.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,418.78 : 1,212,218.31 = 476,010.78 : x
  2. Step 2: Convert to fraction form
    878,418.78/1,212,218.31 = 476,010.78/x
  3. Step 3: Cross multiply
    878,418.78x = 1,212,218.31 × 476,010.78
  4. Step 4: Simplify right side
    878,418.78x = 577,028,983,273.38
  5. Step 5: Solve for x
    x = 577,028,983,273.38/878,418.78
  6. Step 6: Final answer
    x = 656,895.09

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Double scale
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1.5x scale

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.