Home / 857,429.75-1,286,311.39-258,361.25

Finding the Fourth Proportional to 857,429.75, 1,286,311.39 and 258,361.25

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Solution

The fourth proportional to 857,429.75, 1,286,311.39 and 258,361.25 is: 387,592.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,429.75 : 1,286,311.39 = 258,361.25 : x
  2. Step 2: Convert to fraction form
    857,429.75/1,286,311.39 = 258,361.25/x
  3. Step 3: Cross multiply
    857,429.75x = 1,286,311.39 × 258,361.25
  4. Step 4: Simplify right side
    857,429.75x = 332,333,011,532.18
  5. Step 5: Solve for x
    x = 332,333,011,532.18/857,429.75
  6. Step 6: Final answer
    x = 387,592.12

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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.