Home / 500,719.30-690,992.98-296,870.78

Finding the Fourth Proportional to 500,719.30, 690,992.98 and 296,870.78

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Solution

The fourth proportional to 500,719.30, 690,992.98 and 296,870.78 is: 409,681.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,719.30 : 690,992.98 = 296,870.78 : x
  2. Step 2: Convert to fraction form
    500,719.30/690,992.98 = 296,870.78/x
  3. Step 3: Cross multiply
    500,719.30x = 690,992.98 × 296,870.78
  4. Step 4: Simplify right side
    500,719.30x = 205,135,624,947.12
  5. Step 5: Solve for x
    x = 205,135,624,947.12/500,719.30
  6. Step 6: Final answer
    x = 409,681.88

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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.