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Finding the Fourth Proportional to 618,013.22, 852,777.36 and 356,378.18

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Solution

The fourth proportional to 618,013.22, 852,777.36 and 356,378.18 is: 491,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,013.22 : 852,777.36 = 356,378.18 : x
  2. Step 2: Convert to fraction form
    618,013.22/852,777.36 = 356,378.18/x
  3. Step 3: Cross multiply
    618,013.22x = 852,777.36 × 356,378.18
  4. Step 4: Simplify right side
    618,013.22x = 303,911,245,633.95
  5. Step 5: Solve for x
    x = 303,911,245,633.95/618,013.22
  6. Step 6: Final answer
    x = 491,755.25

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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.