Home / 398,958,745.80-598,438,118.70-344,432,899.20

Finding the Fourth Proportional to 398,958,745.80, 598,438,118.70 and 344,432,899.20

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Solution

The fourth proportional to 398,958,745.80, 598,438,118.70 and 344,432,899.20 is: 516,649,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,958,745.80 : 598,438,118.70 = 344,432,899.20 : x
  2. Step 2: Convert to fraction form
    398,958,745.80/598,438,118.70 = 344,432,899.20/x
  3. Step 3: Cross multiply
    398,958,745.80x = 598,438,118.70 × 344,432,899.20
  4. Step 4: Simplify right side
    398,958,745.80x = 206,121,776,215,634,752
  5. Step 5: Solve for x
    x = 206,121,776,215,634,752/398,958,745.80
  6. Step 6: Final answer
    x = 516,649,348.80

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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.