Home / 1,200,211.68-1,656,709.20-691,116.96

Finding the Fourth Proportional to 1,200,211.68, 1,656,709.20 and 691,116.96

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Solution

The fourth proportional to 1,200,211.68, 1,656,709.20 and 691,116.96 is: 953,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,211.68 : 1,656,709.20 = 691,116.96 : x
  2. Step 2: Convert to fraction form
    1,200,211.68/1,656,709.20 = 691,116.96/x
  3. Step 3: Cross multiply
    1,200,211.68x = 1,656,709.20 × 691,116.96
  4. Step 4: Simplify right side
    1,200,211.68x = 1,144,979,825,908.03
  5. Step 5: Solve for x
    x = 1,144,979,825,908.03/1,200,211.68
  6. Step 6: Final answer
    x = 953,981.57

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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.