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Finding the Fourth Proportional to 722,092.19, 996,518.37 and 399,802.30

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Solution

The fourth proportional to 722,092.19, 996,518.37 and 399,802.30 is: 551,744.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,092.19 : 996,518.37 = 399,802.30 : x
  2. Step 2: Convert to fraction form
    722,092.19/996,518.37 = 399,802.30/x
  3. Step 3: Cross multiply
    722,092.19x = 996,518.37 × 399,802.30
  4. Step 4: Simplify right side
    722,092.19x = 398,410,336,318.25
  5. Step 5: Solve for x
    x = 398,410,336,318.25/722,092.19
  6. Step 6: Final answer
    x = 551,744.42

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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.