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Finding the Fourth Proportional to 722,094.70, 996,521.82 and 399,804.80

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Solution

The fourth proportional to 722,094.70, 996,521.82 and 399,804.80 is: 551,747.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,094.70 : 996,521.82 = 399,804.80 : x
  2. Step 2: Convert to fraction form
    722,094.70/996,521.82 = 399,804.80/x
  3. Step 3: Cross multiply
    722,094.70x = 996,521.82 × 399,804.80
  4. Step 4: Simplify right side
    722,094.70x = 398,414,206,940.74
  5. Step 5: Solve for x
    x = 398,414,206,940.74/722,094.70
  6. Step 6: Final answer
    x = 551,747.86

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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.