Home / 1,339,812.80-2,009,719.20-808,371.80

Finding the Fourth Proportional to 1,339,812.80, 2,009,719.20 and 808,371.80

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Solution

The fourth proportional to 1,339,812.80, 2,009,719.20 and 808,371.80 is: 1,212,557.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,812.80 : 2,009,719.20 = 808,371.80 : x
  2. Step 2: Convert to fraction form
    1,339,812.80/2,009,719.20 = 808,371.80/x
  3. Step 3: Cross multiply
    1,339,812.80x = 2,009,719.20 × 808,371.80
  4. Step 4: Simplify right side
    1,339,812.80x = 1,624,600,327,198.56
  5. Step 5: Solve for x
    x = 1,624,600,327,198.56/1,339,812.80
  6. Step 6: Final answer
    x = 1,212,557.70

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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.