Home / 687,436.58-1,031,078.46-214,082.30

Finding the Fourth Proportional to 687,436.58, 1,031,078.46 and 214,082.30

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Solution

The fourth proportional to 687,436.58, 1,031,078.46 and 214,082.30 is: 321,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,436.58 : 1,031,078.46 = 214,082.30 : x
  2. Step 2: Convert to fraction form
    687,436.58/1,031,078.46 = 214,082.30/x
  3. Step 3: Cross multiply
    687,436.58x = 1,031,078.46 × 214,082.30
  4. Step 4: Simplify right side
    687,436.58x = 220,735,648,197.26
  5. Step 5: Solve for x
    x = 220,735,648,197.26/687,436.58
  6. Step 6: Final answer
    x = 321,099.65

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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.