Home / 728,353,067.20-1,092,529,600.80-644,172,812.80

Finding the Fourth Proportional to 728,353,067.20, 1,092,529,600.80 and 644,172,812.80

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Solution

The fourth proportional to 728,353,067.20, 1,092,529,600.80 and 644,172,812.80 is: 966,259,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,353,067.20 : 1,092,529,600.80 = 644,172,812.80 : x
  2. Step 2: Convert to fraction form
    728,353,067.20/1,092,529,600.80 = 644,172,812.80/x
  3. Step 3: Cross multiply
    728,353,067.20x = 1,092,529,600.80 × 644,172,812.80
  4. Step 4: Simplify right side
    728,353,067.20x = 703,777,866,014,596,992
  5. Step 5: Solve for x
    x = 703,777,866,014,596,992/728,353,067.20
  6. Step 6: Final answer
    x = 966,259,219.20

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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.