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Finding the Fourth Proportional to 722,194.29, 996,615.90 and 399,897.45

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Solution

The fourth proportional to 722,194.29, 996,615.90 and 399,897.45 is: 551,851.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,194.29 : 996,615.90 = 399,897.45 : x
  2. Step 2: Convert to fraction form
    722,194.29/996,615.90 = 399,897.45/x
  3. Step 3: Cross multiply
    722,194.29x = 996,615.90 × 399,897.45
  4. Step 4: Simplify right side
    722,194.29x = 398,544,157,039.46
  5. Step 5: Solve for x
    x = 398,544,157,039.46/722,194.29
  6. Step 6: Final answer
    x = 551,851.71

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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.