Home / 523,328,836.40-722,198,637.06-288,387,904.22

Finding the Fourth Proportional to 523,328,836.40, 722,198,637.06 and 288,387,904.22

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Solution

The fourth proportional to 523,328,836.40, 722,198,637.06 and 288,387,904.22 is: 397,977,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,328,836.40 : 722,198,637.06 = 288,387,904.22 : x
  2. Step 2: Convert to fraction form
    523,328,836.40/722,198,637.06 = 288,387,904.22/x
  3. Step 3: Cross multiply
    523,328,836.40x = 722,198,637.06 × 288,387,904.22
  4. Step 4: Simplify right side
    523,328,836.40x = 208,273,351,372,273,824
  5. Step 5: Solve for x
    x = 208,273,351,372,273,824/523,328,836.40
  6. Step 6: Final answer
    x = 397,977,976.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.