Home / 1,311,957.96-1,810,428.78-723,238.40

Finding the Fourth Proportional to 1,311,957.96, 1,810,428.78 and 723,238.40

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Solution

The fourth proportional to 1,311,957.96, 1,810,428.78 and 723,238.40 is: 998,028.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,957.96 : 1,810,428.78 = 723,238.40 : x
  2. Step 2: Convert to fraction form
    1,311,957.96/1,810,428.78 = 723,238.40/x
  3. Step 3: Cross multiply
    1,311,957.96x = 1,810,428.78 × 723,238.40
  4. Step 4: Simplify right side
    1,311,957.96x = 1,309,371,614,161.15
  5. Step 5: Solve for x
    x = 1,309,371,614,161.15/1,311,957.96
  6. Step 6: Final answer
    x = 998,028.64

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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.