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Finding the Fourth Proportional to 520,754.80, 780,449.60 and 296,218.48

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Solution

The fourth proportional to 520,754.80, 780,449.60 and 296,218.48 is: 443,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,754.80 : 780,449.60 = 296,218.48 : x
  2. Step 2: Convert to fraction form
    520,754.80/780,449.60 = 296,218.48/x
  3. Step 3: Cross multiply
    520,754.80x = 780,449.60 × 296,218.48
  4. Step 4: Simplify right side
    520,754.80x = 231,183,594,228.61
  5. Step 5: Solve for x
    x = 231,183,594,228.61/520,754.80
  6. Step 6: Final answer
    x = 443,939.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.