Home / 438,102.32-653,286.38-422,491.10

Finding the Fourth Proportional to 438,102.32, 653,286.38 and 422,491.10

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Solution

The fourth proportional to 438,102.32, 653,286.38 and 422,491.10 is: 630,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,102.32 : 653,286.38 = 422,491.10 : x
  2. Step 2: Convert to fraction form
    438,102.32/653,286.38 = 422,491.10/x
  3. Step 3: Cross multiply
    438,102.32x = 653,286.38 × 422,491.10
  4. Step 4: Simplify right side
    438,102.32x = 276,007,675,922.33
  5. Step 5: Solve for x
    x = 276,007,675,922.33/438,102.32
  6. Step 6: Final answer
    x = 630,007.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.