Home / 695,456.70-1,043,185.05-321,479.70

Finding the Fourth Proportional to 695,456.70, 1,043,185.05 and 321,479.70

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Solution

The fourth proportional to 695,456.70, 1,043,185.05 and 321,479.70 is: 482,219.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,456.70 : 1,043,185.05 = 321,479.70 : x
  2. Step 2: Convert to fraction form
    695,456.70/1,043,185.05 = 321,479.70/x
  3. Step 3: Cross multiply
    695,456.70x = 1,043,185.05 × 321,479.70
  4. Step 4: Simplify right side
    695,456.70x = 335,362,816,918.49
  5. Step 5: Solve for x
    x = 335,362,816,918.49/695,456.70
  6. Step 6: Final answer
    x = 482,219.55

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Double scale
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Similar ratio
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1.5x scale

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.