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Finding the Fourth Proportional to 722,092.69, 996,519.06 and 399,802.80

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Solution

The fourth proportional to 722,092.69, 996,519.06 and 399,802.80 is: 551,745.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,092.69 : 996,519.06 = 399,802.80 : x
  2. Step 2: Convert to fraction form
    722,092.69/996,519.06 = 399,802.80/x
  3. Step 3: Cross multiply
    722,092.69x = 996,519.06 × 399,802.80
  4. Step 4: Simplify right side
    722,092.69x = 398,411,110,441.37
  5. Step 5: Solve for x
    x = 398,411,110,441.37/722,092.69
  6. Step 6: Final answer
    x = 551,745.11

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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.