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Finding the Fourth Proportional to 671,007.48, 925,983.15 and 399,069.41

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Solution

The fourth proportional to 671,007.48, 925,983.15 and 399,069.41 is: 550,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,007.48 : 925,983.15 = 399,069.41 : x
  2. Step 2: Convert to fraction form
    671,007.48/925,983.15 = 399,069.41/x
  3. Step 3: Cross multiply
    671,007.48x = 925,983.15 × 399,069.41
  4. Step 4: Simplify right side
    671,007.48x = 369,531,546,098.95
  5. Step 5: Solve for x
    x = 369,531,546,098.95/671,007.48
  6. Step 6: Final answer
    x = 550,711.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.