Home / 1,317,697.20-1,976,545.80-518,713.20

Finding the Fourth Proportional to 1,317,697.20, 1,976,545.80 and 518,713.20

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Solution

The fourth proportional to 1,317,697.20, 1,976,545.80 and 518,713.20 is: 778,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,697.20 : 1,976,545.80 = 518,713.20 : x
  2. Step 2: Convert to fraction form
    1,317,697.20/1,976,545.80 = 518,713.20/x
  3. Step 3: Cross multiply
    1,317,697.20x = 1,976,545.80 × 518,713.20
  4. Step 4: Simplify right side
    1,317,697.20x = 1,025,260,396,864.56
  5. Step 5: Solve for x
    x = 1,025,260,396,864.56/1,317,697.20
  6. Step 6: Final answer
    x = 778,069.80

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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.