Home / 1,317,876.12-1,976,065.20-518,724.60

Finding the Fourth Proportional to 1,317,876.12, 1,976,065.20 and 518,724.60

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Solution

The fourth proportional to 1,317,876.12, 1,976,065.20 and 518,724.60 is: 777,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,876.12 : 1,976,065.20 = 518,724.60 : x
  2. Step 2: Convert to fraction form
    1,317,876.12/1,976,065.20 = 518,724.60/x
  3. Step 3: Cross multiply
    1,317,876.12x = 1,976,065.20 × 518,724.60
  4. Step 4: Simplify right side
    1,317,876.12x = 1,025,033,630,443.92
  5. Step 5: Solve for x
    x = 1,025,033,630,443.92/1,317,876.12
  6. Step 6: Final answer
    x = 777,792.10

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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.