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Finding the Fourth Proportional to 447,973.34, 670,380.81 and 279,572.51

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Solution

The fourth proportional to 447,973.34, 670,380.81 and 279,572.51 is: 418,373.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,973.34 : 670,380.81 = 279,572.51 : x
  2. Step 2: Convert to fraction form
    447,973.34/670,380.81 = 279,572.51/x
  3. Step 3: Cross multiply
    447,973.34x = 670,380.81 × 279,572.51
  4. Step 4: Simplify right side
    447,973.34x = 187,420,046,335.09
  5. Step 5: Solve for x
    x = 187,420,046,335.09/447,973.34
  6. Step 6: Final answer
    x = 418,373.22

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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.