Home / 690,725.70-1,036,228.68-217,300.95

Finding the Fourth Proportional to 690,725.70, 1,036,228.68 and 217,300.95

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Solution

The fourth proportional to 690,725.70, 1,036,228.68 and 217,300.95 is: 325,995.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,725.70 : 1,036,228.68 = 217,300.95 : x
  2. Step 2: Convert to fraction form
    690,725.70/1,036,228.68 = 217,300.95/x
  3. Step 3: Cross multiply
    690,725.70x = 1,036,228.68 × 217,300.95
  4. Step 4: Simplify right side
    690,725.70x = 225,173,476,581.25
  5. Step 5: Solve for x
    x = 225,173,476,581.25/690,725.70
  6. Step 6: Final answer
    x = 325,995.51

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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.