Home / 672,777,010.40-1,008,976,558.80-212,856,159.20

Finding the Fourth Proportional to 672,777,010.40, 1,008,976,558.80 and 212,856,159.20

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Solution

The fourth proportional to 672,777,010.40, 1,008,976,558.80 and 212,856,159.20 is: 319,224,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,777,010.40 : 1,008,976,558.80 = 212,856,159.20 : x
  2. Step 2: Convert to fraction form
    672,777,010.40/1,008,976,558.80 = 212,856,159.20/x
  3. Step 3: Cross multiply
    672,777,010.40x = 1,008,976,558.80 × 212,856,159.20
  4. Step 4: Simplify right side
    672,777,010.40x = 214,766,875,029,000,928
  5. Step 5: Solve for x
    x = 214,766,875,029,000,928/672,777,010.40
  6. Step 6: Final answer
    x = 319,224,455.81

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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.