Home / 510,919.40-766,379.10-131,839.40

Finding the Fourth Proportional to 510,919.40, 766,379.10 and 131,839.40

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Solution

The fourth proportional to 510,919.40, 766,379.10 and 131,839.40 is: 197,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,919.40 : 766,379.10 = 131,839.40 : x
  2. Step 2: Convert to fraction form
    510,919.40/766,379.10 = 131,839.40/x
  3. Step 3: Cross multiply
    510,919.40x = 766,379.10 × 131,839.40
  4. Step 4: Simplify right side
    510,919.40x = 101,038,960,716.54
  5. Step 5: Solve for x
    x = 101,038,960,716.54/510,919.40
  6. Step 6: Final answer
    x = 197,759.10

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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.