Home / 858,999.70-1,288,499.55-810,010.90

Finding the Fourth Proportional to 858,999.70, 1,288,499.55 and 810,010.90

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Solution

The fourth proportional to 858,999.70, 1,288,499.55 and 810,010.90 is: 1,215,016.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,999.70 : 1,288,499.55 = 810,010.90 : x
  2. Step 2: Convert to fraction form
    858,999.70/1,288,499.55 = 810,010.90/x
  3. Step 3: Cross multiply
    858,999.70x = 1,288,499.55 × 810,010.90
  4. Step 4: Simplify right side
    858,999.70x = 1,043,698,680,145.10
  5. Step 5: Solve for x
    x = 1,043,698,680,145.10/858,999.70
  6. Step 6: Final answer
    x = 1,215,016.35

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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.