Home / 719,982.05-993,556.17-397,685.21

Finding the Fourth Proportional to 719,982.05, 993,556.17 and 397,685.21

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Solution

The fourth proportional to 719,982.05, 993,556.17 and 397,685.21 is: 548,795.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,982.05 : 993,556.17 = 397,685.21 : x
  2. Step 2: Convert to fraction form
    719,982.05/993,556.17 = 397,685.21/x
  3. Step 3: Cross multiply
    719,982.05x = 993,556.17 × 397,685.21
  4. Step 4: Simplify right side
    719,982.05x = 395,122,589,145.47
  5. Step 5: Solve for x
    x = 395,122,589,145.47/719,982.05
  6. Step 6: Final answer
    x = 548,795.06

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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.