Home / 665,723.80-997,905.30-328,245.40

Finding the Fourth Proportional to 665,723.80, 997,905.30 and 328,245.40

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Solution

The fourth proportional to 665,723.80, 997,905.30 and 328,245.40 is: 492,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,723.80 : 997,905.30 = 328,245.40 : x
  2. Step 2: Convert to fraction form
    665,723.80/997,905.30 = 328,245.40/x
  3. Step 3: Cross multiply
    665,723.80x = 997,905.30 × 328,245.40
  4. Step 4: Simplify right side
    665,723.80x = 327,557,824,360.62
  5. Step 5: Solve for x
    x = 327,557,824,360.62/665,723.80
  6. Step 6: Final answer
    x = 492,032.62

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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.