Home / 681,115.80-1,021,722.30-207,800.40

Finding the Fourth Proportional to 681,115.80, 1,021,722.30 and 207,800.40

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Solution

The fourth proportional to 681,115.80, 1,021,722.30 and 207,800.40 is: 311,715.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,115.80 : 1,021,722.30 = 207,800.40 : x
  2. Step 2: Convert to fraction form
    681,115.80/1,021,722.30 = 207,800.40/x
  3. Step 3: Cross multiply
    681,115.80x = 1,021,722.30 × 207,800.40
  4. Step 4: Simplify right side
    681,115.80x = 212,314,302,628.92
  5. Step 5: Solve for x
    x = 212,314,302,628.92/681,115.80
  6. Step 6: Final answer
    x = 311,715.43

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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.