Home / 1,243,815.84-1,861,986.11-1,113,889.20

Finding the Fourth Proportional to 1,243,815.84, 1,861,986.11 and 1,113,889.20

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Solution

The fourth proportional to 1,243,815.84, 1,861,986.11 and 1,113,889.20 is: 1,667,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,815.84 : 1,861,986.11 = 1,113,889.20 : x
  2. Step 2: Convert to fraction form
    1,243,815.84/1,861,986.11 = 1,113,889.20/x
  3. Step 3: Cross multiply
    1,243,815.84x = 1,861,986.11 × 1,113,889.20
  4. Step 4: Simplify right side
    1,243,815.84x = 2,074,046,212,909.57
  5. Step 5: Solve for x
    x = 2,074,046,212,909.57/1,243,815.84
  6. Step 6: Final answer
    x = 1,667,486.57

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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.