Home / 500,326.68-690,438.02-279,565.73

Finding the Fourth Proportional to 500,326.68, 690,438.02 and 279,565.73

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Solution

The fourth proportional to 500,326.68, 690,438.02 and 279,565.73 is: 385,793.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,326.68 : 690,438.02 = 279,565.73 : x
  2. Step 2: Convert to fraction form
    500,326.68/690,438.02 = 279,565.73/x
  3. Step 3: Cross multiply
    500,326.68x = 690,438.02 × 279,565.73
  4. Step 4: Simplify right side
    500,326.68x = 193,022,809,409.32
  5. Step 5: Solve for x
    x = 193,022,809,409.32/500,326.68
  6. Step 6: Final answer
    x = 385,793.56

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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.