Home / 690,721.70-1,036,222.68-217,296.95

Finding the Fourth Proportional to 690,721.70, 1,036,222.68 and 217,296.95

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Solution

The fourth proportional to 690,721.70, 1,036,222.68 and 217,296.95 is: 325,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,721.70 : 1,036,222.68 = 217,296.95 : x
  2. Step 2: Convert to fraction form
    690,721.70/1,036,222.68 = 217,296.95/x
  3. Step 3: Cross multiply
    690,721.70x = 1,036,222.68 × 217,296.95
  4. Step 4: Simplify right side
    690,721.70x = 225,168,027,884.83
  5. Step 5: Solve for x
    x = 225,168,027,884.83/690,721.70
  6. Step 6: Final answer
    x = 325,989.51

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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.