Home / 686,425.44-1,029,644.28-281,840.16

Finding the Fourth Proportional to 686,425.44, 1,029,644.28 and 281,840.16

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Solution

The fourth proportional to 686,425.44, 1,029,644.28 and 281,840.16 is: 422,762.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,425.44 : 1,029,644.28 = 281,840.16 : x
  2. Step 2: Convert to fraction form
    686,425.44/1,029,644.28 = 281,840.16/x
  3. Step 3: Cross multiply
    686,425.44x = 1,029,644.28 × 281,840.16
  4. Step 4: Simplify right side
    686,425.44x = 290,195,108,618.29
  5. Step 5: Solve for x
    x = 290,195,108,618.29/686,425.44
  6. Step 6: Final answer
    x = 422,762.75

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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.