Home / 1,990,674.90-2,980,107.45-1,317,516.30

Finding the Fourth Proportional to 1,990,674.90, 2,980,107.45 and 1,317,516.30

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Solution

The fourth proportional to 1,990,674.90, 2,980,107.45 and 1,317,516.30 is: 1,972,366.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,674.90 : 2,980,107.45 = 1,317,516.30 : x
  2. Step 2: Convert to fraction form
    1,990,674.90/2,980,107.45 = 1,317,516.30/x
  3. Step 3: Cross multiply
    1,990,674.90x = 2,980,107.45 × 1,317,516.30
  4. Step 4: Simplify right side
    1,990,674.90x = 3,926,340,141,126.44
  5. Step 5: Solve for x
    x = 3,926,340,141,126.44/1,990,674.90
  6. Step 6: Final answer
    x = 1,972,366.33

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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.