Home / 627,016.69-865,292.97-355,077.21

Finding the Fourth Proportional to 627,016.69, 865,292.97 and 355,077.21

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Solution

The fourth proportional to 627,016.69, 865,292.97 and 355,077.21 is: 490,012.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,016.69 : 865,292.97 = 355,077.21 : x
  2. Step 2: Convert to fraction form
    627,016.69/865,292.97 = 355,077.21/x
  3. Step 3: Cross multiply
    627,016.69x = 865,292.97 × 355,077.21
  4. Step 4: Simplify right side
    627,016.69x = 307,245,813,620.21
  5. Step 5: Solve for x
    x = 307,245,813,620.21/627,016.69
  6. Step 6: Final answer
    x = 490,012.18

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1.5x scale

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.