Home / 878,694.66-1,212,856.41-511,258.26

Finding the Fourth Proportional to 878,694.66, 1,212,856.41 and 511,258.26

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Solution

The fourth proportional to 878,694.66, 1,212,856.41 and 511,258.26 is: 705,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,694.66 : 1,212,856.41 = 511,258.26 : x
  2. Step 2: Convert to fraction form
    878,694.66/1,212,856.41 = 511,258.26/x
  3. Step 3: Cross multiply
    878,694.66x = 1,212,856.41 × 511,258.26
  4. Step 4: Simplify right side
    878,694.66x = 620,082,857,806.45
  5. Step 5: Solve for x
    x = 620,082,857,806.45/878,694.66
  6. Step 6: Final answer
    x = 705,686.38

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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.