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Finding the Fourth Proportional to 552,806.76, 762,912.06 and 311,112.60

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Solution

The fourth proportional to 552,806.76, 762,912.06 and 311,112.60 is: 429,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,806.76 : 762,912.06 = 311,112.60 : x
  2. Step 2: Convert to fraction form
    552,806.76/762,912.06 = 311,112.60/x
  3. Step 3: Cross multiply
    552,806.76x = 762,912.06 × 311,112.60
  4. Step 4: Simplify right side
    552,806.76x = 237,351,554,557.96
  5. Step 5: Solve for x
    x = 237,351,554,557.96/552,806.76
  6. Step 6: Final answer
    x = 429,357.19

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1.5x scale

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.