Home / 869,376.22-1,198,636.71-621,314.61

Finding the Fourth Proportional to 869,376.22, 1,198,636.71 and 621,314.61

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Solution

The fourth proportional to 869,376.22, 1,198,636.71 and 621,314.61 is: 856,626.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,376.22 : 1,198,636.71 = 621,314.61 : x
  2. Step 2: Convert to fraction form
    869,376.22/1,198,636.71 = 621,314.61/x
  3. Step 3: Cross multiply
    869,376.22x = 1,198,636.71 × 621,314.61
  4. Step 4: Simplify right side
    869,376.22x = 744,730,493,180.52
  5. Step 5: Solve for x
    x = 744,730,493,180.52/869,376.22
  6. Step 6: Final answer
    x = 856,626.25

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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.