Home / 857,808.54-1,286,722.03-258,774.89

Finding the Fourth Proportional to 857,808.54, 1,286,722.03 and 258,774.89

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Solution

The fourth proportional to 857,808.54, 1,286,722.03 and 258,774.89 is: 388,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,808.54 : 1,286,722.03 = 258,774.89 : x
  2. Step 2: Convert to fraction form
    857,808.54/1,286,722.03 = 258,774.89/x
  3. Step 3: Cross multiply
    857,808.54x = 1,286,722.03 × 258,774.89
  4. Step 4: Simplify right side
    857,808.54x = 332,971,347,910.09
  5. Step 5: Solve for x
    x = 332,971,347,910.09/857,808.54
  6. Step 6: Final answer
    x = 388,165.11

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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.