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Finding the Fourth Proportional to 561,243.92, 774,517.31 and 319,526.49

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Solution

The fourth proportional to 561,243.92, 774,517.31 and 319,526.49 is: 440,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,243.92 : 774,517.31 = 319,526.49 : x
  2. Step 2: Convert to fraction form
    561,243.92/774,517.31 = 319,526.49/x
  3. Step 3: Cross multiply
    561,243.92x = 774,517.31 × 319,526.49
  4. Step 4: Simplify right side
    561,243.92x = 247,478,793,478.58
  5. Step 5: Solve for x
    x = 247,478,793,478.58/561,243.92
  6. Step 6: Final answer
    x = 440,946.95

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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.