Home / 857,846.76-1,286,779.40-258,813.12

Finding the Fourth Proportional to 857,846.76, 1,286,779.40 and 258,813.12

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Solution

The fourth proportional to 857,846.76, 1,286,779.40 and 258,813.12 is: 388,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,846.76 : 1,286,779.40 = 258,813.12 : x
  2. Step 2: Convert to fraction form
    857,846.76/1,286,779.40 = 258,813.12/x
  3. Step 3: Cross multiply
    857,846.76x = 1,286,779.40 × 258,813.12
  4. Step 4: Simplify right side
    857,846.76x = 333,035,391,265.73
  5. Step 5: Solve for x
    x = 333,035,391,265.73/857,846.76
  6. Step 6: Final answer
    x = 388,222.47

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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.