Home / 557,777.68-769,739.20-303,128.92

Finding the Fourth Proportional to 557,777.68, 769,739.20 and 303,128.92

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Solution

The fourth proportional to 557,777.68, 769,739.20 and 303,128.92 is: 418,321.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,777.68 : 769,739.20 = 303,128.92 : x
  2. Step 2: Convert to fraction form
    557,777.68/769,739.20 = 303,128.92/x
  3. Step 3: Cross multiply
    557,777.68x = 769,739.20 × 303,128.92
  4. Step 4: Simplify right side
    557,777.68x = 233,330,212,377.66
  5. Step 5: Solve for x
    x = 233,330,212,377.66/557,777.68
  6. Step 6: Final answer
    x = 418,321.17

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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.