Home / 681,783.21-940,892.87-379,979.37

Finding the Fourth Proportional to 681,783.21, 940,892.87 and 379,979.37

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Solution

The fourth proportional to 681,783.21, 940,892.87 and 379,979.37 is: 524,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,783.21 : 940,892.87 = 379,979.37 : x
  2. Step 2: Convert to fraction form
    681,783.21/940,892.87 = 379,979.37/x
  3. Step 3: Cross multiply
    681,783.21x = 940,892.87 × 379,979.37
  4. Step 4: Simplify right side
    681,783.21x = 357,519,878,080.20
  5. Step 5: Solve for x
    x = 357,519,878,080.20/681,783.21
  6. Step 6: Final answer
    x = 524,389.38

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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.