Home / 858,760.70-1,288,141.05-699,328.40

Finding the Fourth Proportional to 858,760.70, 1,288,141.05 and 699,328.40

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Solution

The fourth proportional to 858,760.70, 1,288,141.05 and 699,328.40 is: 1,048,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,760.70 : 1,288,141.05 = 699,328.40 : x
  2. Step 2: Convert to fraction form
    858,760.70/1,288,141.05 = 699,328.40/x
  3. Step 3: Cross multiply
    858,760.70x = 1,288,141.05 × 699,328.40
  4. Step 4: Simplify right side
    858,760.70x = 900,833,619,470.82
  5. Step 5: Solve for x
    x = 900,833,619,470.82/858,760.70
  6. Step 6: Final answer
    x = 1,048,992.60

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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.