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Finding the Fourth Proportional to 552,728.16, 762,755.76 and 311,010.48

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Solution

The fourth proportional to 552,728.16, 762,755.76 and 311,010.48 is: 429,189.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,728.16 : 762,755.76 = 311,010.48 : x
  2. Step 2: Convert to fraction form
    552,728.16/762,755.76 = 311,010.48/x
  3. Step 3: Cross multiply
    552,728.16x = 762,755.76 × 311,010.48
  4. Step 4: Simplify right side
    552,728.16x = 237,225,035,040.37
  5. Step 5: Solve for x
    x = 237,225,035,040.37/552,728.16
  6. Step 6: Final answer
    x = 429,189.34

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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.