Home / 690,719.70-1,036,219.68-217,294.95

Finding the Fourth Proportional to 690,719.70, 1,036,219.68 and 217,294.95

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Solution

The fourth proportional to 690,719.70, 1,036,219.68 and 217,294.95 is: 325,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,719.70 : 1,036,219.68 = 217,294.95 : x
  2. Step 2: Convert to fraction form
    690,719.70/1,036,219.68 = 217,294.95/x
  3. Step 3: Cross multiply
    690,719.70x = 1,036,219.68 × 217,294.95
  4. Step 4: Simplify right side
    690,719.70x = 225,165,303,554.62
  5. Step 5: Solve for x
    x = 225,165,303,554.62/690,719.70
  6. Step 6: Final answer
    x = 325,986.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.