Home / 787,238.14-1,086,353.68-438,396.54

Finding the Fourth Proportional to 787,238.14, 1,086,353.68 and 438,396.54

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Solution

The fourth proportional to 787,238.14, 1,086,353.68 and 438,396.54 is: 604,967.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,238.14 : 1,086,353.68 = 438,396.54 : x
  2. Step 2: Convert to fraction form
    787,238.14/1,086,353.68 = 438,396.54/x
  3. Step 3: Cross multiply
    787,238.14x = 1,086,353.68 × 438,396.54
  4. Step 4: Simplify right side
    787,238.14x = 476,253,689,096.50
  5. Step 5: Solve for x
    x = 476,253,689,096.50/787,238.14
  6. Step 6: Final answer
    x = 604,967.76

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1.5x scale

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.