Home / 719,979.05-993,552.03-397,682.21

Finding the Fourth Proportional to 719,979.05, 993,552.03 and 397,682.21

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Solution

The fourth proportional to 719,979.05, 993,552.03 and 397,682.21 is: 548,790.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,979.05 : 993,552.03 = 397,682.21 : x
  2. Step 2: Convert to fraction form
    719,979.05/993,552.03 = 397,682.21/x
  3. Step 3: Cross multiply
    719,979.05x = 993,552.03 × 397,682.21
  4. Step 4: Simplify right side
    719,979.05x = 395,117,962,072.63
  5. Step 5: Solve for x
    x = 395,117,962,072.63/719,979.05
  6. Step 6: Final answer
    x = 548,790.92

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Double scale
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Similar ratio
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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.