Home / 859,812.30-1,289,718.45-777,143.70

Finding the Fourth Proportional to 859,812.30, 1,289,718.45 and 777,143.70

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Solution

The fourth proportional to 859,812.30, 1,289,718.45 and 777,143.70 is: 1,165,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,812.30 : 1,289,718.45 = 777,143.70 : x
  2. Step 2: Convert to fraction form
    859,812.30/1,289,718.45 = 777,143.70/x
  3. Step 3: Cross multiply
    859,812.30x = 1,289,718.45 × 777,143.70
  4. Step 4: Simplify right side
    859,812.30x = 1,002,296,568,191.26
  5. Step 5: Solve for x
    x = 1,002,296,568,191.26/859,812.30
  6. Step 6: Final answer
    x = 1,165,715.55

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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.