Home / 1,305,609.40-1,958,414.10-857,711.80

Finding the Fourth Proportional to 1,305,609.40, 1,958,414.10 and 857,711.80

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Solution

The fourth proportional to 1,305,609.40, 1,958,414.10 and 857,711.80 is: 1,286,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305,609.40 : 1,958,414.10 = 857,711.80 : x
  2. Step 2: Convert to fraction form
    1,305,609.40/1,958,414.10 = 857,711.80/x
  3. Step 3: Cross multiply
    1,305,609.40x = 1,958,414.10 × 857,711.80
  4. Step 4: Simplify right side
    1,305,609.40x = 1,679,754,882,856.38
  5. Step 5: Solve for x
    x = 1,679,754,882,856.38/1,305,609.40
  6. Step 6: Final answer
    x = 1,286,567.70

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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.