Home / 665,022.80-997,534.20-399,083.60

Finding the Fourth Proportional to 665,022.80, 997,534.20 and 399,083.60

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Solution

The fourth proportional to 665,022.80, 997,534.20 and 399,083.60 is: 598,625.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,022.80 : 997,534.20 = 399,083.60 : x
  2. Step 2: Convert to fraction form
    665,022.80/997,534.20 = 399,083.60/x
  3. Step 3: Cross multiply
    665,022.80x = 997,534.20 × 399,083.60
  4. Step 4: Simplify right side
    665,022.80x = 398,099,539,659.12
  5. Step 5: Solve for x
    x = 398,099,539,659.12/665,022.80
  6. Step 6: Final answer
    x = 598,625.40

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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.