Home / 1,145,388.72-1,581,427.20-715,861.92

Finding the Fourth Proportional to 1,145,388.72, 1,581,427.20 and 715,861.92

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Solution

The fourth proportional to 1,145,388.72, 1,581,427.20 and 715,861.92 is: 988,383.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,388.72 : 1,581,427.20 = 715,861.92 : x
  2. Step 2: Convert to fraction form
    1,145,388.72/1,581,427.20 = 715,861.92/x
  3. Step 3: Cross multiply
    1,145,388.72x = 1,581,427.20 × 715,861.92
  4. Step 4: Simplify right side
    1,145,388.72x = 1,132,083,511,732.22
  5. Step 5: Solve for x
    x = 1,132,083,511,732.22/1,145,388.72
  6. Step 6: Final answer
    x = 988,383.67

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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.