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Finding the Fourth Proportional to 722,193.84, 996,615.32 and 399,897.02

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Solution

The fourth proportional to 722,193.84, 996,615.32 and 399,897.02 is: 551,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,193.84 : 996,615.32 = 399,897.02 : x
  2. Step 2: Convert to fraction form
    722,193.84/996,615.32 = 399,897.02/x
  3. Step 3: Cross multiply
    722,193.84x = 996,615.32 × 399,897.02
  4. Step 4: Simplify right side
    722,193.84x = 398,543,496,554.35
  5. Step 5: Solve for x
    x = 398,543,496,554.35/722,193.84
  6. Step 6: Final answer
    x = 551,851.14

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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.