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Finding the Fourth Proportional to 722,094.69, 996,521.82 and 399,804.78

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Solution

The fourth proportional to 722,094.69, 996,521.82 and 399,804.78 is: 551,747.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,094.69 : 996,521.82 = 399,804.78 : x
  2. Step 2: Convert to fraction form
    722,094.69/996,521.82 = 399,804.78/x
  3. Step 3: Cross multiply
    722,094.69x = 996,521.82 × 399,804.78
  4. Step 4: Simplify right side
    722,094.69x = 398,414,187,010.30
  5. Step 5: Solve for x
    x = 398,414,187,010.30/722,094.69
  6. Step 6: Final answer
    x = 551,747.84

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1.5x scale

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.