Home / 866,921.40-1,299,863.70-447,017.40

Finding the Fourth Proportional to 866,921.40, 1,299,863.70 and 447,017.40

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Solution

The fourth proportional to 866,921.40, 1,299,863.70 and 447,017.40 is: 670,258.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,921.40 : 1,299,863.70 = 447,017.40 : x
  2. Step 2: Convert to fraction form
    866,921.40/1,299,863.70 = 447,017.40/x
  3. Step 3: Cross multiply
    866,921.40x = 1,299,863.70 × 447,017.40
  4. Step 4: Simplify right side
    866,921.40x = 581,061,691,528.38
  5. Step 5: Solve for x
    x = 581,061,691,528.38/866,921.40
  6. Step 6: Final answer
    x = 670,258.79

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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.