Home / 790,510.05-1,185,100.61-640,378.04

Finding the Fourth Proportional to 790,510.05, 1,185,100.61 and 640,378.04

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Solution

The fourth proportional to 790,510.05, 1,185,100.61 and 640,378.04 is: 960,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,510.05 : 1,185,100.61 = 640,378.04 : x
  2. Step 2: Convert to fraction form
    790,510.05/1,185,100.61 = 640,378.04/x
  3. Step 3: Cross multiply
    790,510.05x = 1,185,100.61 × 640,378.04
  4. Step 4: Simplify right side
    790,510.05x = 758,912,396,707.21
  5. Step 5: Solve for x
    x = 758,912,396,707.21/790,510.05
  6. Step 6: Final answer
    x = 960,028.78

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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.