Home / 1,312,725.45-1,969,087.97-315,453.45

Finding the Fourth Proportional to 1,312,725.45, 1,969,087.97 and 315,453.45

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Solution

The fourth proportional to 1,312,725.45, 1,969,087.97 and 315,453.45 is: 473,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,725.45 : 1,969,087.97 = 315,453.45 : x
  2. Step 2: Convert to fraction form
    1,312,725.45/1,969,087.97 = 315,453.45/x
  3. Step 3: Cross multiply
    1,312,725.45x = 1,969,087.97 × 315,453.45
  4. Step 4: Simplify right side
    1,312,725.45x = 621,155,591,912.73
  5. Step 5: Solve for x
    x = 621,155,591,912.73/1,312,725.45
  6. Step 6: Final answer
    x = 473,180.12

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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.