Home / 1,274,711.12-1,912,164.60-328,091.12

Finding the Fourth Proportional to 1,274,711.12, 1,912,164.60 and 328,091.12

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Solution

The fourth proportional to 1,274,711.12, 1,912,164.60 and 328,091.12 is: 492,161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,711.12 : 1,912,164.60 = 328,091.12 : x
  2. Step 2: Convert to fraction form
    1,274,711.12/1,912,164.60 = 328,091.12/x
  3. Step 3: Cross multiply
    1,274,711.12x = 1,912,164.60 × 328,091.12
  4. Step 4: Simplify right side
    1,274,711.12x = 627,364,225,238.35
  5. Step 5: Solve for x
    x = 627,364,225,238.35/1,274,711.12
  6. Step 6: Final answer
    x = 492,161.88

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Double scale
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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.