Home / 1,317,881.80-1,976,822.70-1,215,238.60

Finding the Fourth Proportional to 1,317,881.80, 1,976,822.70 and 1,215,238.60

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Solution

The fourth proportional to 1,317,881.80, 1,976,822.70 and 1,215,238.60 is: 1,822,857.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,881.80 : 1,976,822.70 = 1,215,238.60 : x
  2. Step 2: Convert to fraction form
    1,317,881.80/1,976,822.70 = 1,215,238.60/x
  3. Step 3: Cross multiply
    1,317,881.80x = 1,976,822.70 × 1,215,238.60
  4. Step 4: Simplify right side
    1,317,881.80x = 2,402,311,250,396.22
  5. Step 5: Solve for x
    x = 2,402,311,250,396.22/1,317,881.80
  6. Step 6: Final answer
    x = 1,822,857.90

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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.