Home / 858,139.80-1,286,711.23-325,370.19

Finding the Fourth Proportional to 858,139.80, 1,286,711.23 and 325,370.19

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Solution

The fourth proportional to 858,139.80, 1,286,711.23 and 325,370.19 is: 487,866.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,139.80 : 1,286,711.23 = 325,370.19 : x
  2. Step 2: Convert to fraction form
    858,139.80/1,286,711.23 = 325,370.19/x
  3. Step 3: Cross multiply
    858,139.80x = 1,286,711.23 × 325,370.19
  4. Step 4: Simplify right side
    858,139.80x = 418,657,477,380.23
  5. Step 5: Solve for x
    x = 418,657,477,380.23/858,139.80
  6. Step 6: Final answer
    x = 487,866.29

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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.