Home / 1,392,238.80-2,088,358.20-445,640.40

Finding the Fourth Proportional to 1,392,238.80, 2,088,358.20 and 445,640.40

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Solution

The fourth proportional to 1,392,238.80, 2,088,358.20 and 445,640.40 is: 668,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,238.80 : 2,088,358.20 = 445,640.40 : x
  2. Step 2: Convert to fraction form
    1,392,238.80/2,088,358.20 = 445,640.40/x
  3. Step 3: Cross multiply
    1,392,238.80x = 2,088,358.20 × 445,640.40
  4. Step 4: Simplify right side
    1,392,238.80x = 930,656,783,591.28
  5. Step 5: Solve for x
    x = 930,656,783,591.28/1,392,238.80
  6. Step 6: Final answer
    x = 668,460.60

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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.