Home / 812,659.80-1,217,868.66-612,760.50

Finding the Fourth Proportional to 812,659.80, 1,217,868.66 and 612,760.50

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Solution

The fourth proportional to 812,659.80, 1,217,868.66 and 612,760.50 is: 918,295.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,659.80 : 1,217,868.66 = 612,760.50 : x
  2. Step 2: Convert to fraction form
    812,659.80/1,217,868.66 = 612,760.50/x
  3. Step 3: Cross multiply
    812,659.80x = 1,217,868.66 × 612,760.50
  4. Step 4: Simplify right side
    812,659.80x = 746,261,809,035.93
  5. Step 5: Solve for x
    x = 746,261,809,035.93/812,659.80
  6. Step 6: Final answer
    x = 918,295.47

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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.