Home / 643,933.68-888,741.90-372,011.82

Finding the Fourth Proportional to 643,933.68, 888,741.90 and 372,011.82

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Solution

The fourth proportional to 643,933.68, 888,741.90 and 372,011.82 is: 513,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,933.68 : 888,741.90 = 372,011.82 : x
  2. Step 2: Convert to fraction form
    643,933.68/888,741.90 = 372,011.82/x
  3. Step 3: Cross multiply
    643,933.68x = 888,741.90 × 372,011.82
  4. Step 4: Simplify right side
    643,933.68x = 330,622,491,729.26
  5. Step 5: Solve for x
    x = 330,622,491,729.26/643,933.68
  6. Step 6: Final answer
    x = 513,441.84

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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.