Home / 915,460.20-1,373,190.30-864,138.60

Finding the Fourth Proportional to 915,460.20, 1,373,190.30 and 864,138.60

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Solution

The fourth proportional to 915,460.20, 1,373,190.30 and 864,138.60 is: 1,296,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,460.20 : 1,373,190.30 = 864,138.60 : x
  2. Step 2: Convert to fraction form
    915,460.20/1,373,190.30 = 864,138.60/x
  3. Step 3: Cross multiply
    915,460.20x = 1,373,190.30 × 864,138.60
  4. Step 4: Simplify right side
    915,460.20x = 1,186,626,743,375.58
  5. Step 5: Solve for x
    x = 1,186,626,743,375.58/915,460.20
  6. Step 6: Final answer
    x = 1,296,207.90

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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.