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Finding the Fourth Proportional to 1,245,874.50, 1,867,535.09 and 945,719.69

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Solution

The fourth proportional to 1,245,874.50, 1,867,535.09 and 945,719.69 is: 1,417,610.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,874.50 : 1,867,535.09 = 945,719.69 : x
  2. Step 2: Convert to fraction form
    1,245,874.50/1,867,535.09 = 945,719.69/x
  3. Step 3: Cross multiply
    1,245,874.50x = 1,867,535.09 × 945,719.69
  4. Step 4: Simplify right side
    1,245,874.50x = 1,766,164,695,859.10
  5. Step 5: Solve for x
    x = 1,766,164,695,859.10/1,245,874.50
  6. Step 6: Final answer
    x = 1,417,610.44

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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.