Home / 681,480,043.20-1,021,968,122.40-221,433,220.80

Finding the Fourth Proportional to 681,480,043.20, 1,021,968,122.40 and 221,433,220.80

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Solution

The fourth proportional to 681,480,043.20, 1,021,968,122.40 and 221,433,220.80 is: 332,067,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,480,043.20 : 1,021,968,122.40 = 221,433,220.80 : x
  2. Step 2: Convert to fraction form
    681,480,043.20/1,021,968,122.40 = 221,433,220.80/x
  3. Step 3: Cross multiply
    681,480,043.20x = 1,021,968,122.40 × 221,433,220.80
  4. Step 4: Simplify right side
    681,480,043.20x = 226,297,692,897,960,640
  5. Step 5: Solve for x
    x = 226,297,692,897,960,640/681,480,043.20
  6. Step 6: Final answer
    x = 332,067,967.59

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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.