Home / 499,257.72-688,980.24-284,394.60

Finding the Fourth Proportional to 499,257.72, 688,980.24 and 284,394.60

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Solution

The fourth proportional to 499,257.72, 688,980.24 and 284,394.60 is: 392,467.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,257.72 : 688,980.24 = 284,394.60 : x
  2. Step 2: Convert to fraction form
    499,257.72/688,980.24 = 284,394.60/x
  3. Step 3: Cross multiply
    499,257.72x = 688,980.24 × 284,394.60
  4. Step 4: Simplify right side
    499,257.72x = 195,942,259,762.70
  5. Step 5: Solve for x
    x = 195,942,259,762.70/499,257.72
  6. Step 6: Final answer
    x = 392,467.16

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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.