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Finding the Fourth Proportional to 890,693.40, 1,336,040.10 and 259,627.80

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Solution

The fourth proportional to 890,693.40, 1,336,040.10 and 259,627.80 is: 389,441.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,693.40 : 1,336,040.10 = 259,627.80 : x
  2. Step 2: Convert to fraction form
    890,693.40/1,336,040.10 = 259,627.80/x
  3. Step 3: Cross multiply
    890,693.40x = 1,336,040.10 × 259,627.80
  4. Step 4: Simplify right side
    890,693.40x = 346,873,151,874.78
  5. Step 5: Solve for x
    x = 346,873,151,874.78/890,693.40
  6. Step 6: Final answer
    x = 389,441.70

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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.