Home / 493,290.20-739,935.30-392,906.90

Finding the Fourth Proportional to 493,290.20, 739,935.30 and 392,906.90

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Solution

The fourth proportional to 493,290.20, 739,935.30 and 392,906.90 is: 589,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,290.20 : 739,935.30 = 392,906.90 : x
  2. Step 2: Convert to fraction form
    493,290.20/739,935.30 = 392,906.90/x
  3. Step 3: Cross multiply
    493,290.20x = 739,935.30 × 392,906.90
  4. Step 4: Simplify right side
    493,290.20x = 290,725,684,923.57
  5. Step 5: Solve for x
    x = 290,725,684,923.57/493,290.20
  6. Step 6: Final answer
    x = 589,360.35

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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.