Home / 631,383.47-947,310.49-378,845.21

Finding the Fourth Proportional to 631,383.47, 947,310.49 and 378,845.21

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Solution

The fourth proportional to 631,383.47, 947,310.49 and 378,845.21 is: 568,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,383.47 : 947,310.49 = 378,845.21 : x
  2. Step 2: Convert to fraction form
    631,383.47/947,310.49 = 378,845.21/x
  3. Step 3: Cross multiply
    631,383.47x = 947,310.49 × 378,845.21
  4. Step 4: Simplify right side
    631,383.47x = 358,884,044,361.09
  5. Step 5: Solve for x
    x = 358,884,044,361.09/631,383.47
  6. Step 6: Final answer
    x = 568,409.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.