Home / 858,960.90-1,288,113.30-259,722.90

Finding the Fourth Proportional to 858,960.90, 1,288,113.30 and 259,722.90

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Solution

The fourth proportional to 858,960.90, 1,288,113.30 and 259,722.90 is: 389,485.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,960.90 : 1,288,113.30 = 259,722.90 : x
  2. Step 2: Convert to fraction form
    858,960.90/1,288,113.30 = 259,722.90/x
  3. Step 3: Cross multiply
    858,960.90x = 1,288,113.30 × 259,722.90
  4. Step 4: Simplify right side
    858,960.90x = 334,552,521,804.57
  5. Step 5: Solve for x
    x = 334,552,521,804.57/858,960.90
  6. Step 6: Final answer
    x = 389,485.16

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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.