Home / 7,859,938.16-11,789,906.48-2,180,162.72

Finding the Fourth Proportional to 7,859,938.16, 11,789,906.48 and 2,180,162.72

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Solution

The fourth proportional to 7,859,938.16, 11,789,906.48 and 2,180,162.72 is: 3,270,243.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859,938.16 : 11,789,906.48 = 2,180,162.72 : x
  2. Step 2: Convert to fraction form
    7,859,938.16/11,789,906.48 = 2,180,162.72/x
  3. Step 3: Cross multiply
    7,859,938.16x = 11,789,906.48 × 2,180,162.72
  4. Step 4: Simplify right side
    7,859,938.16x = 25,703,914,579,982.43
  5. Step 5: Solve for x
    x = 25,703,914,579,982.43/7,859,938.16
  6. Step 6: Final answer
    x = 3,270,243.87

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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.