Home / 672,777,008.40-1,008,976,555.80-212,856,157.20

Finding the Fourth Proportional to 672,777,008.40, 1,008,976,555.80 and 212,856,157.20

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Solution

The fourth proportional to 672,777,008.40, 1,008,976,555.80 and 212,856,157.20 is: 319,224,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,777,008.40 : 1,008,976,555.80 = 212,856,157.20 : x
  2. Step 2: Convert to fraction form
    672,777,008.40/1,008,976,555.80 = 212,856,157.20/x
  3. Step 3: Cross multiply
    672,777,008.40x = 1,008,976,555.80 × 212,856,157.20
  4. Step 4: Simplify right side
    672,777,008.40x = 214,766,872,372,479,360
  5. Step 5: Solve for x
    x = 214,766,872,372,479,360/672,777,008.40
  6. Step 6: Final answer
    x = 319,224,452.81

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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.