Home / 807,638,980.20-1,211,458,470.30-262,435,626.60

Finding the Fourth Proportional to 807,638,980.20, 1,211,458,470.30 and 262,435,626.60

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Solution

The fourth proportional to 807,638,980.20, 1,211,458,470.30 and 262,435,626.60 is: 393,653,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,638,980.20 : 1,211,458,470.30 = 262,435,626.60 : x
  2. Step 2: Convert to fraction form
    807,638,980.20/1,211,458,470.30 = 262,435,626.60/x
  3. Step 3: Cross multiply
    807,638,980.20x = 1,211,458,470.30 × 262,435,626.60
  4. Step 4: Simplify right side
    807,638,980.20x = 317,929,862,753,057,984
  5. Step 5: Solve for x
    x = 317,929,862,753,057,984/807,638,980.20
  6. Step 6: Final answer
    x = 393,653,439.90

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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.