Home / 1,981,013.80-2,971,520.70-718,677.40

Finding the Fourth Proportional to 1,981,013.80, 2,971,520.70 and 718,677.40

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Solution

The fourth proportional to 1,981,013.80, 2,971,520.70 and 718,677.40 is: 1,078,016.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,013.80 : 2,971,520.70 = 718,677.40 : x
  2. Step 2: Convert to fraction form
    1,981,013.80/2,971,520.70 = 718,677.40/x
  3. Step 3: Cross multiply
    1,981,013.80x = 2,971,520.70 × 718,677.40
  4. Step 4: Simplify right side
    1,981,013.80x = 2,135,564,770,722.18
  5. Step 5: Solve for x
    x = 2,135,564,770,722.18/1,981,013.80
  6. Step 6: Final answer
    x = 1,078,016.10

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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.