Home / 1,317,405.76-1,818,020.40-713,793.76

Finding the Fourth Proportional to 1,317,405.76, 1,818,020.40 and 713,793.76

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Solution

The fourth proportional to 1,317,405.76, 1,818,020.40 and 713,793.76 is: 985,035.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,405.76 : 1,818,020.40 = 713,793.76 : x
  2. Step 2: Convert to fraction form
    1,317,405.76/1,818,020.40 = 713,793.76/x
  3. Step 3: Cross multiply
    1,317,405.76x = 1,818,020.40 × 713,793.76
  4. Step 4: Simplify right side
    1,317,405.76x = 1,297,691,617,072.70
  5. Step 5: Solve for x
    x = 1,297,691,617,072.70/1,317,405.76
  6. Step 6: Final answer
    x = 985,035.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.