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Finding the Fourth Proportional to 447,685.49, 671,417.49 and 279,119

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Solution

The fourth proportional to 447,685.49, 671,417.49 and 279,119 is: 418,609.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,685.49 : 671,417.49 = 279,119 : x
  2. Step 2: Convert to fraction form
    447,685.49/671,417.49 = 279,119/x
  3. Step 3: Cross multiply
    447,685.49x = 671,417.49 × 279,119
  4. Step 4: Simplify right side
    447,685.49x = 187,405,378,391.31
  5. Step 5: Solve for x
    x = 187,405,378,391.31/447,685.49
  6. Step 6: Final answer
    x = 418,609.45

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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.