Home / 890,999.10-1,336,498.65-259,976.70

Finding the Fourth Proportional to 890,999.10, 1,336,498.65 and 259,976.70

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Solution

The fourth proportional to 890,999.10, 1,336,498.65 and 259,976.70 is: 389,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,999.10 : 1,336,498.65 = 259,976.70 : x
  2. Step 2: Convert to fraction form
    890,999.10/1,336,498.65 = 259,976.70/x
  3. Step 3: Cross multiply
    890,999.10x = 1,336,498.65 × 259,976.70
  4. Step 4: Simplify right side
    890,999.10x = 347,458,508,581.46
  5. Step 5: Solve for x
    x = 347,458,508,581.46/890,999.10
  6. Step 6: Final answer
    x = 389,965.05

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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.