Home / 858,608.30-1,287,912.45-775,939.70

Finding the Fourth Proportional to 858,608.30, 1,287,912.45 and 775,939.70

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Solution

The fourth proportional to 858,608.30, 1,287,912.45 and 775,939.70 is: 1,163,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,608.30 : 1,287,912.45 = 775,939.70 : x
  2. Step 2: Convert to fraction form
    858,608.30/1,287,912.45 = 775,939.70/x
  3. Step 3: Cross multiply
    858,608.30x = 1,287,912.45 × 775,939.70
  4. Step 4: Simplify right side
    858,608.30x = 999,342,400,079.27
  5. Step 5: Solve for x
    x = 999,342,400,079.27/858,608.30
  6. Step 6: Final answer
    x = 1,163,909.55

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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.