Home / 405,595,310,452.80-608,392,965,679.20-388,398,729,998.40

Finding the Fourth Proportional to 405,595,310,452.80, 608,392,965,679.20 and 388,398,729,998.40

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Solution

The fourth proportional to 405,595,310,452.80, 608,392,965,679.20 and 388,398,729,998.40 is: 582,598,094,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,595,310,452.80 : 608,392,965,679.20 = 388,398,729,998.40 : x
  2. Step 2: Convert to fraction form
    405,595,310,452.80/608,392,965,679.20 = 388,398,729,998.40/x
  3. Step 3: Cross multiply
    405,595,310,452.80x = 608,392,965,679.20 × 388,398,729,998.40
  4. Step 4: Simplify right side
    405,595,310,452.80x = 236,299,055,209,761,438,957,568
  5. Step 5: Solve for x
    x = 236,299,055,209,761,438,957,568/405,595,310,452.80
  6. Step 6: Final answer
    x = 582,598,094,997.60

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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.