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Finding the Fourth Proportional to 423,080.88, 631,648.02 and 322,705.68

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Solution

The fourth proportional to 423,080.88, 631,648.02 and 322,705.68 is: 481,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,080.88 : 631,648.02 = 322,705.68 : x
  2. Step 2: Convert to fraction form
    423,080.88/631,648.02 = 322,705.68/x
  3. Step 3: Cross multiply
    423,080.88x = 631,648.02 × 322,705.68
  4. Step 4: Simplify right side
    423,080.88x = 203,836,403,814.75
  5. Step 5: Solve for x
    x = 203,836,403,814.75/423,080.88
  6. Step 6: Final answer
    x = 481,790.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.