Home / 890,809.40-1,336,214.10-259,743.80

Finding the Fourth Proportional to 890,809.40, 1,336,214.10 and 259,743.80

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Solution

The fourth proportional to 890,809.40, 1,336,214.10 and 259,743.80 is: 389,615.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,809.40 : 1,336,214.10 = 259,743.80 : x
  2. Step 2: Convert to fraction form
    890,809.40/1,336,214.10 = 259,743.80/x
  3. Step 3: Cross multiply
    890,809.40x = 1,336,214.10 × 259,743.80
  4. Step 4: Simplify right side
    890,809.40x = 347,073,327,947.58
  5. Step 5: Solve for x
    x = 347,073,327,947.58/890,809.40
  6. Step 6: Final answer
    x = 389,615.70

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Half scale
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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.