Home / 719,979.38-993,552.51-397,682.56

Finding the Fourth Proportional to 719,979.38, 993,552.51 and 397,682.56

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Solution

The fourth proportional to 719,979.38, 993,552.51 and 397,682.56 is: 548,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,979.38 : 993,552.51 = 397,682.56 : x
  2. Step 2: Convert to fraction form
    719,979.38/993,552.51 = 397,682.56/x
  3. Step 3: Cross multiply
    719,979.38x = 993,552.51 × 397,682.56
  4. Step 4: Simplify right side
    719,979.38x = 395,118,500,703.46
  5. Step 5: Solve for x
    x = 395,118,500,703.46/719,979.38
  6. Step 6: Final answer
    x = 548,791.41

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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.