Home / 858,511.20-1,288,803.60-852,290.40

Finding the Fourth Proportional to 858,511.20, 1,288,803.60 and 852,290.40

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Solution

The fourth proportional to 858,511.20, 1,288,803.60 and 852,290.40 is: 1,279,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,511.20 : 1,288,803.60 = 852,290.40 : x
  2. Step 2: Convert to fraction form
    858,511.20/1,288,803.60 = 852,290.40/x
  3. Step 3: Cross multiply
    858,511.20x = 1,288,803.60 × 852,290.40
  4. Step 4: Simplify right side
    858,511.20x = 1,098,434,935,765.44
  5. Step 5: Solve for x
    x = 1,098,434,935,765.44/858,511.20
  6. Step 6: Final answer
    x = 1,279,464.89

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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.