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Finding the Fourth Proportional to 681,429.15, 940,359.31 and 375,533.81

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Solution

The fourth proportional to 681,429.15, 940,359.31 and 375,533.81 is: 518,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,429.15 : 940,359.31 = 375,533.81 : x
  2. Step 2: Convert to fraction form
    681,429.15/940,359.31 = 375,533.81/x
  3. Step 3: Cross multiply
    681,429.15x = 940,359.31 × 375,533.81
  4. Step 4: Simplify right side
    681,429.15x = 353,136,714,453.27
  5. Step 5: Solve for x
    x = 353,136,714,453.27/681,429.15
  6. Step 6: Final answer
    x = 518,229.54

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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.