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Finding the Fourth Proportional to 678,960.23, 936,950.03 and 368,854.78

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Solution

The fourth proportional to 678,960.23, 936,950.03 and 368,854.78 is: 509,011.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,960.23 : 936,950.03 = 368,854.78 : x
  2. Step 2: Convert to fraction form
    678,960.23/936,950.03 = 368,854.78/x
  3. Step 3: Cross multiply
    678,960.23x = 936,950.03 × 368,854.78
  4. Step 4: Simplify right side
    678,960.23x = 345,598,498,214.79
  5. Step 5: Solve for x
    x = 345,598,498,214.79/678,960.23
  6. Step 6: Final answer
    x = 509,011.41

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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.