Home / 1,317,841.17-1,976,012.70-518,689.50

Finding the Fourth Proportional to 1,317,841.17, 1,976,012.70 and 518,689.50

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Solution

The fourth proportional to 1,317,841.17, 1,976,012.70 and 518,689.50 is: 777,739.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,841.17 : 1,976,012.70 = 518,689.50 : x
  2. Step 2: Convert to fraction form
    1,317,841.17/1,976,012.70 = 518,689.50/x
  3. Step 3: Cross multiply
    1,317,841.17x = 1,976,012.70 × 518,689.50
  4. Step 4: Simplify right side
    1,317,841.17x = 1,024,937,039,356.65
  5. Step 5: Solve for x
    x = 1,024,937,039,356.65/1,317,841.17
  6. Step 6: Final answer
    x = 777,739.43

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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.