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Finding the Fourth Proportional to 447,963.21, 670,365.62 and 279,562.39

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Solution

The fourth proportional to 447,963.21, 670,365.62 and 279,562.39 is: 418,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,963.21 : 670,365.62 = 279,562.39 : x
  2. Step 2: Convert to fraction form
    447,963.21/670,365.62 = 279,562.39/x
  3. Step 3: Cross multiply
    447,963.21x = 670,365.62 × 279,562.39
  4. Step 4: Simplify right side
    447,963.21x = 187,409,012,875.67
  5. Step 5: Solve for x
    x = 187,409,012,875.67/447,963.21
  6. Step 6: Final answer
    x = 418,358.05

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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.