Home / 766,946,680.40-1,150,420,020.60-639,400,840.40

Finding the Fourth Proportional to 766,946,680.40, 1,150,420,020.60 and 639,400,840.40

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Solution

The fourth proportional to 766,946,680.40, 1,150,420,020.60 and 639,400,840.40 is: 959,101,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,946,680.40 : 1,150,420,020.60 = 639,400,840.40 : x
  2. Step 2: Convert to fraction form
    766,946,680.40/1,150,420,020.60 = 639,400,840.40/x
  3. Step 3: Cross multiply
    766,946,680.40x = 1,150,420,020.60 × 639,400,840.40
  4. Step 4: Simplify right side
    766,946,680.40x = 735,579,527,984,625,280
  5. Step 5: Solve for x
    x = 735,579,527,984,625,280/766,946,680.40
  6. Step 6: Final answer
    x = 959,101,260.60

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Half scale
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Double scale
Find fourth proportional to 766,946,681.40, 1,150,420,022.10 and 639,400,841.40
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.