Home / 715,212.64-1,072,491.18-427,156.12

Finding the Fourth Proportional to 715,212.64, 1,072,491.18 and 427,156.12

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Solution

The fourth proportional to 715,212.64, 1,072,491.18 and 427,156.12 is: 640,538.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,212.64 : 1,072,491.18 = 427,156.12 : x
  2. Step 2: Convert to fraction form
    715,212.64/1,072,491.18 = 427,156.12/x
  3. Step 3: Cross multiply
    715,212.64x = 1,072,491.18 × 427,156.12
  4. Step 4: Simplify right side
    715,212.64x = 458,121,171,183.02
  5. Step 5: Solve for x
    x = 458,121,171,183.02/715,212.64
  6. Step 6: Final answer
    x = 640,538.42

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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.