Home / 1,259,722,513.80-1,889,583,770.70-386,458,662.60

Finding the Fourth Proportional to 1,259,722,513.80, 1,889,583,770.70 and 386,458,662.60

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Solution

The fourth proportional to 1,259,722,513.80, 1,889,583,770.70 and 386,458,662.60 is: 579,687,993.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,722,513.80 : 1,889,583,770.70 = 386,458,662.60 : x
  2. Step 2: Convert to fraction form
    1,259,722,513.80/1,889,583,770.70 = 386,458,662.60/x
  3. Step 3: Cross multiply
    1,259,722,513.80x = 1,889,583,770.70 × 386,458,662.60
  4. Step 4: Simplify right side
    1,259,722,513.80x = 730,246,016,895,387,136
  5. Step 5: Solve for x
    x = 730,246,016,895,387,136/1,259,722,513.80
  6. Step 6: Final answer
    x = 579,687,993.90

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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.