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Finding the Fourth Proportional to 561,522.57, 774,954.57 and 306,912.03

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Solution

The fourth proportional to 561,522.57, 774,954.57 and 306,912.03 is: 423,567.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,522.57 : 774,954.57 = 306,912.03 : x
  2. Step 2: Convert to fraction form
    561,522.57/774,954.57 = 306,912.03/x
  3. Step 3: Cross multiply
    561,522.57x = 774,954.57 × 306,912.03
  4. Step 4: Simplify right side
    561,522.57x = 237,842,880,236.48
  5. Step 5: Solve for x
    x = 237,842,880,236.48/561,522.57
  6. Step 6: Final answer
    x = 423,567.80

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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.