Home / 728,711,998.40-1,093,067,997.60-658,420,068.80

Finding the Fourth Proportional to 728,711,998.40, 1,093,067,997.60 and 658,420,068.80

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Solution

The fourth proportional to 728,711,998.40, 1,093,067,997.60 and 658,420,068.80 is: 987,630,103.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,711,998.40 : 1,093,067,997.60 = 658,420,068.80 : x
  2. Step 2: Convert to fraction form
    728,711,998.40/1,093,067,997.60 = 658,420,068.80/x
  3. Step 3: Cross multiply
    728,711,998.40x = 1,093,067,997.60 × 658,420,068.80
  4. Step 4: Simplify right side
    728,711,998.40x = 719,697,906,182,870,144
  5. Step 5: Solve for x
    x = 719,697,906,182,870,144/728,711,998.40
  6. Step 6: Final answer
    x = 987,630,103.20

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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.