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Finding the Fourth Proportional to 447,783.49, 671,937.68 and 321,287.41

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Solution

The fourth proportional to 447,783.49, 671,937.68 and 321,287.41 is: 482,119.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,783.49 : 671,937.68 = 321,287.41 : x
  2. Step 2: Convert to fraction form
    447,783.49/671,937.68 = 321,287.41/x
  3. Step 3: Cross multiply
    447,783.49x = 671,937.68 × 321,287.41
  4. Step 4: Simplify right side
    447,783.49x = 215,885,116,724.51
  5. Step 5: Solve for x
    x = 215,885,116,724.51/447,783.49
  6. Step 6: Final answer
    x = 482,119.42

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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.