Home / 690,709.53-1,036,204.42-217,284.78

Finding the Fourth Proportional to 690,709.53, 1,036,204.42 and 217,284.78

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Solution

The fourth proportional to 690,709.53, 1,036,204.42 and 217,284.78 is: 325,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,709.53 : 1,036,204.42 = 217,284.78 : x
  2. Step 2: Convert to fraction form
    690,709.53/1,036,204.42 = 217,284.78/x
  3. Step 3: Cross multiply
    690,709.53x = 1,036,204.42 × 217,284.78
  4. Step 4: Simplify right side
    690,709.53x = 225,151,449,434.73
  5. Step 5: Solve for x
    x = 225,151,449,434.73/690,709.53
  6. Step 6: Final answer
    x = 325,971.25

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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.