Home / 740,728.56-1,022,288.37-418,459.42

Finding the Fourth Proportional to 740,728.56, 1,022,288.37 and 418,459.42

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Solution

The fourth proportional to 740,728.56, 1,022,288.37 and 418,459.42 is: 577,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,728.56 : 1,022,288.37 = 418,459.42 : x
  2. Step 2: Convert to fraction form
    740,728.56/1,022,288.37 = 418,459.42/x
  3. Step 3: Cross multiply
    740,728.56x = 1,022,288.37 × 418,459.42
  4. Step 4: Simplify right side
    740,728.56x = 427,786,198,091.58
  5. Step 5: Solve for x
    x = 427,786,198,091.58/740,728.56
  6. Step 6: Final answer
    x = 577,520.87

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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.