Home / 857,817.53-1,286,735.52-258,783.87

Finding the Fourth Proportional to 857,817.53, 1,286,735.52 and 258,783.87

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Solution

The fourth proportional to 857,817.53, 1,286,735.52 and 258,783.87 is: 388,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,817.53 : 1,286,735.52 = 258,783.87 : x
  2. Step 2: Convert to fraction form
    857,817.53/1,286,735.52 = 258,783.87/x
  3. Step 3: Cross multiply
    857,817.53x = 1,286,735.52 × 258,783.87
  4. Step 4: Simplify right side
    857,817.53x = 332,986,397,532.06
  5. Step 5: Solve for x
    x = 332,986,397,532.06/857,817.53
  6. Step 6: Final answer
    x = 388,178.59

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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.