Home / 890,999.20-1,336,498.80-291,979.90

Finding the Fourth Proportional to 890,999.20, 1,336,498.80 and 291,979.90

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Solution

The fourth proportional to 890,999.20, 1,336,498.80 and 291,979.90 is: 437,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,999.20 : 1,336,498.80 = 291,979.90 : x
  2. Step 2: Convert to fraction form
    890,999.20/1,336,498.80 = 291,979.90/x
  3. Step 3: Cross multiply
    890,999.20x = 1,336,498.80 × 291,979.90
  4. Step 4: Simplify right side
    890,999.20x = 390,230,785,974.12
  5. Step 5: Solve for x
    x = 390,230,785,974.12/890,999.20
  6. Step 6: Final answer
    x = 437,969.85

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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.