Home / 721,811.84-996,086.56-399,522.24

Finding the Fourth Proportional to 721,811.84, 996,086.56 and 399,522.24

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Solution

The fourth proportional to 721,811.84, 996,086.56 and 399,522.24 is: 551,333.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,811.84 : 996,086.56 = 399,522.24 : x
  2. Step 2: Convert to fraction form
    721,811.84/996,086.56 = 399,522.24/x
  3. Step 3: Cross multiply
    721,811.84x = 996,086.56 × 399,522.24
  4. Step 4: Simplify right side
    721,811.84x = 397,958,733,685.09
  5. Step 5: Solve for x
    x = 397,958,733,685.09/721,811.84
  6. Step 6: Final answer
    x = 551,333.06

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Double scale
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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.