Home / 690,725.45-1,036,228.30-217,300.70

Finding the Fourth Proportional to 690,725.45, 1,036,228.30 and 217,300.70

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Solution

The fourth proportional to 690,725.45, 1,036,228.30 and 217,300.70 is: 325,995.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,725.45 : 1,036,228.30 = 217,300.70 : x
  2. Step 2: Convert to fraction form
    690,725.45/1,036,228.30 = 217,300.70/x
  3. Step 3: Cross multiply
    690,725.45x = 1,036,228.30 × 217,300.70
  4. Step 4: Simplify right side
    690,725.45x = 225,173,134,949.81
  5. Step 5: Solve for x
    x = 225,173,134,949.81/690,725.45
  6. Step 6: Final answer
    x = 325,995.13

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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.