Home / 681,611.36-940,664.78-375,687.32

Finding the Fourth Proportional to 681,611.36, 940,664.78 and 375,687.32

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Solution

The fourth proportional to 681,611.36, 940,664.78 and 375,687.32 is: 518,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,611.36 : 940,664.78 = 375,687.32 : x
  2. Step 2: Convert to fraction form
    681,611.36/940,664.78 = 375,687.32/x
  3. Step 3: Cross multiply
    681,611.36x = 940,664.78 × 375,687.32
  4. Step 4: Simplify right side
    681,611.36x = 353,395,830,216.59
  5. Step 5: Solve for x
    x = 353,395,830,216.59/681,611.36
  6. Step 6: Final answer
    x = 518,471.16

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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.