Home / 638,801,616.90-958,202,425.35-275,295,972.90

Finding the Fourth Proportional to 638,801,616.90, 958,202,425.35 and 275,295,972.90

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Solution

The fourth proportional to 638,801,616.90, 958,202,425.35 and 275,295,972.90 is: 412,943,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,801,616.90 : 958,202,425.35 = 275,295,972.90 : x
  2. Step 2: Convert to fraction form
    638,801,616.90/958,202,425.35 = 275,295,972.90/x
  3. Step 3: Cross multiply
    638,801,616.90x = 958,202,425.35 × 275,295,972.90
  4. Step 4: Simplify right side
    638,801,616.90x = 263,789,268,921,867,872
  5. Step 5: Solve for x
    x = 263,789,268,921,867,872/638,801,616.90
  6. Step 6: Final answer
    x = 412,943,959.35

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Half scale
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Double scale
Find fourth proportional to 638,801,617.90, 958,202,426.85 and 275,295,973.90
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.