Home / 724,777.28-1,086,686.16-345,756.56

Finding the Fourth Proportional to 724,777.28, 1,086,686.16 and 345,756.56

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Solution

The fourth proportional to 724,777.28, 1,086,686.16 and 345,756.56 is: 518,405.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,777.28 : 1,086,686.16 = 345,756.56 : x
  2. Step 2: Convert to fraction form
    724,777.28/1,086,686.16 = 345,756.56/x
  3. Step 3: Cross multiply
    724,777.28x = 1,086,686.16 × 345,756.56
  4. Step 4: Simplify right side
    724,777.28x = 375,728,868,481.21
  5. Step 5: Solve for x
    x = 375,728,868,481.21/724,777.28
  6. Step 6: Final answer
    x = 518,405.97

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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.