Home / 665,076.20-997,614.30-398,699.60

Finding the Fourth Proportional to 665,076.20, 997,614.30 and 398,699.60

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Solution

The fourth proportional to 665,076.20, 997,614.30 and 398,699.60 is: 598,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,076.20 : 997,614.30 = 398,699.60 : x
  2. Step 2: Convert to fraction form
    665,076.20/997,614.30 = 398,699.60/x
  3. Step 3: Cross multiply
    665,076.20x = 997,614.30 × 398,699.60
  4. Step 4: Simplify right side
    665,076.20x = 397,748,422,364.28
  5. Step 5: Solve for x
    x = 397,748,422,364.28/665,076.20
  6. Step 6: Final answer
    x = 598,049.40

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Similar ratio
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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.