Home / 858,082.10-1,287,123.15-659,405.30

Finding the Fourth Proportional to 858,082.10, 1,287,123.15 and 659,405.30

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Solution

The fourth proportional to 858,082.10, 1,287,123.15 and 659,405.30 is: 989,107.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,082.10 : 1,287,123.15 = 659,405.30 : x
  2. Step 2: Convert to fraction form
    858,082.10/1,287,123.15 = 659,405.30/x
  3. Step 3: Cross multiply
    858,082.10x = 1,287,123.15 × 659,405.30
  4. Step 4: Simplify right side
    858,082.10x = 848,735,826,862.70
  5. Step 5: Solve for x
    x = 848,735,826,862.70/858,082.10
  6. Step 6: Final answer
    x = 989,107.95

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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.