Home / 766,128.70-1,147,443.45-451,200.70

Finding the Fourth Proportional to 766,128.70, 1,147,443.45 and 451,200.70

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Solution

The fourth proportional to 766,128.70, 1,147,443.45 and 451,200.70 is: 675,770.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,128.70 : 1,147,443.45 = 451,200.70 : x
  2. Step 2: Convert to fraction form
    766,128.70/1,147,443.45 = 451,200.70/x
  3. Step 3: Cross multiply
    766,128.70x = 1,147,443.45 × 451,200.70
  4. Step 4: Simplify right side
    766,128.70x = 517,727,287,850.42
  5. Step 5: Solve for x
    x = 517,727,287,850.42/766,128.70
  6. Step 6: Final answer
    x = 675,770.65

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Double scale
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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.