Home / 2,142,607.68-3,211,668.90-722,172.78

Finding the Fourth Proportional to 2,142,607.68, 3,211,668.90 and 722,172.78

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Solution

The fourth proportional to 2,142,607.68, 3,211,668.90 and 722,172.78 is: 1,082,503.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142,607.68 : 3,211,668.90 = 722,172.78 : x
  2. Step 2: Convert to fraction form
    2,142,607.68/3,211,668.90 = 722,172.78/x
  3. Step 3: Cross multiply
    2,142,607.68x = 3,211,668.90 × 722,172.78
  4. Step 4: Simplify right side
    2,142,607.68x = 2,319,379,857,952.54
  5. Step 5: Solve for x
    x = 2,319,379,857,952.54/2,142,607.68
  6. Step 6: Final answer
    x = 1,082,503.29

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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.