Home / 766,941,680.40-1,150,412,520.60-639,395,840.40

Finding the Fourth Proportional to 766,941,680.40, 1,150,412,520.60 and 639,395,840.40

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Solution

The fourth proportional to 766,941,680.40, 1,150,412,520.60 and 639,395,840.40 is: 959,093,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,941,680.40 : 1,150,412,520.60 = 639,395,840.40 : x
  2. Step 2: Convert to fraction form
    766,941,680.40/1,150,412,520.60 = 639,395,840.40/x
  3. Step 3: Cross multiply
    766,941,680.40x = 1,150,412,520.60 × 639,395,840.40
  4. Step 4: Simplify right side
    766,941,680.40x = 735,568,980,415,719,168
  5. Step 5: Solve for x
    x = 735,568,980,415,719,168/766,941,680.40
  6. Step 6: Final answer
    x = 959,093,760.60

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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.