Home / 500,326.80-690,438.19-279,565.86

Finding the Fourth Proportional to 500,326.80, 690,438.19 and 279,565.86

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Solution

The fourth proportional to 500,326.80, 690,438.19 and 279,565.86 is: 385,793.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,326.80 : 690,438.19 = 279,565.86 : x
  2. Step 2: Convert to fraction form
    500,326.80/690,438.19 = 279,565.86/x
  3. Step 3: Cross multiply
    500,326.80x = 690,438.19 × 279,565.86
  4. Step 4: Simplify right side
    500,326.80x = 193,022,943,939.18
  5. Step 5: Solve for x
    x = 193,022,943,939.18/500,326.80
  6. Step 6: Final answer
    x = 385,793.73

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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.