Home / 866,143,724.20-1,299,215,586.30-406,978,700.20

Finding the Fourth Proportional to 866,143,724.20, 1,299,215,586.30 and 406,978,700.20

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Solution

The fourth proportional to 866,143,724.20, 1,299,215,586.30 and 406,978,700.20 is: 610,468,050.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,143,724.20 : 1,299,215,586.30 = 406,978,700.20 : x
  2. Step 2: Convert to fraction form
    866,143,724.20/1,299,215,586.30 = 406,978,700.20/x
  3. Step 3: Cross multiply
    866,143,724.20x = 1,299,215,586.30 × 406,978,700.20
  4. Step 4: Simplify right side
    866,143,724.20x = 528,753,070,591,954,880
  5. Step 5: Solve for x
    x = 528,753,070,591,954,880/866,143,724.20
  6. Step 6: Final answer
    x = 610,468,050.30

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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.