Home / 721,438.61-1,082,146.97-248,128.07

Finding the Fourth Proportional to 721,438.61, 1,082,146.97 and 248,128.07

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Solution

The fourth proportional to 721,438.61, 1,082,146.97 and 248,128.07 is: 372,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,438.61 : 1,082,146.97 = 248,128.07 : x
  2. Step 2: Convert to fraction form
    721,438.61/1,082,146.97 = 248,128.07/x
  3. Step 3: Cross multiply
    721,438.61x = 1,082,146.97 × 248,128.07
  4. Step 4: Simplify right side
    721,438.61x = 268,511,032,471.07
  5. Step 5: Solve for x
    x = 268,511,032,471.07/721,438.61
  6. Step 6: Final answer
    x = 372,188.33

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1.5x scale

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.