Home / 398,561,564.88-597,041,995.32-198,538,396.56

Finding the Fourth Proportional to 398,561,564.88, 597,041,995.32 and 198,538,396.56

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Solution

The fourth proportional to 398,561,564.88, 597,041,995.32 and 198,538,396.56 is: 297,408,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,561,564.88 : 597,041,995.32 = 198,538,396.56 : x
  2. Step 2: Convert to fraction form
    398,561,564.88/597,041,995.32 = 198,538,396.56/x
  3. Step 3: Cross multiply
    398,561,564.88x = 597,041,995.32 × 198,538,396.56
  4. Step 4: Simplify right side
    398,561,564.88x = 118,535,760,429,815,840
  5. Step 5: Solve for x
    x = 118,535,760,429,815,840/398,561,564.88
  6. Step 6: Final answer
    x = 297,408,909.63

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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.