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Finding the Fourth Proportional to 447,906.90, 670,282.37 and 279,506.49

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Solution

The fourth proportional to 447,906.90, 670,282.37 and 279,506.49 is: 418,275.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,906.90 : 670,282.37 = 279,506.49 : x
  2. Step 2: Convert to fraction form
    447,906.90/670,282.37 = 279,506.49/x
  3. Step 3: Cross multiply
    447,906.90x = 670,282.37 × 279,506.49
  4. Step 4: Simplify right side
    447,906.90x = 187,348,272,547.58
  5. Step 5: Solve for x
    x = 187,348,272,547.58/447,906.90
  6. Step 6: Final answer
    x = 418,275.03

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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.