Home / 858,998.70-1,288,498.05-810,009.90

Finding the Fourth Proportional to 858,998.70, 1,288,498.05 and 810,009.90

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Solution

The fourth proportional to 858,998.70, 1,288,498.05 and 810,009.90 is: 1,215,014.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,998.70 : 1,288,498.05 = 810,009.90 : x
  2. Step 2: Convert to fraction form
    858,998.70/1,288,498.05 = 810,009.90/x
  3. Step 3: Cross multiply
    858,998.70x = 1,288,498.05 × 810,009.90
  4. Step 4: Simplify right side
    858,998.70x = 1,043,696,176,630.70
  5. Step 5: Solve for x
    x = 1,043,696,176,630.70/858,998.70
  6. Step 6: Final answer
    x = 1,215,014.85

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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.