Home / 642,978,331.20-964,467,496.80-233,981,337.60

Finding the Fourth Proportional to 642,978,331.20, 964,467,496.80 and 233,981,337.60

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Solution

The fourth proportional to 642,978,331.20, 964,467,496.80 and 233,981,337.60 is: 350,972,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,978,331.20 : 964,467,496.80 = 233,981,337.60 : x
  2. Step 2: Convert to fraction form
    642,978,331.20/964,467,496.80 = 233,981,337.60/x
  3. Step 3: Cross multiply
    642,978,331.20x = 964,467,496.80 × 233,981,337.60
  4. Step 4: Simplify right side
    642,978,331.20x = 225,667,394,972,987,712
  5. Step 5: Solve for x
    x = 225,667,394,972,987,712/642,978,331.20
  6. Step 6: Final answer
    x = 350,972,006.40

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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.