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Finding the Fourth Proportional to 447,859.71, 671,125.23 and 328,949.76

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Solution

The fourth proportional to 447,859.71, 671,125.23 and 328,949.76 is: 492,936.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,859.71 : 671,125.23 = 328,949.76 : x
  2. Step 2: Convert to fraction form
    447,859.71/671,125.23 = 328,949.76/x
  3. Step 3: Cross multiply
    447,859.71x = 671,125.23 × 328,949.76
  4. Step 4: Simplify right side
    447,859.71x = 220,766,483,338.45
  5. Step 5: Solve for x
    x = 220,766,483,338.45/447,859.71
  6. Step 6: Final answer
    x = 492,936.69

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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.