Home / 665,074.80-997,945.92-310,116.60

Finding the Fourth Proportional to 665,074.80, 997,945.92 and 310,116.60

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Solution

The fourth proportional to 665,074.80, 997,945.92 and 310,116.60 is: 465,330.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,074.80 : 997,945.92 = 310,116.60 : x
  2. Step 2: Convert to fraction form
    665,074.80/997,945.92 = 310,116.60/x
  3. Step 3: Cross multiply
    665,074.80x = 997,945.92 × 310,116.60
  4. Step 4: Simplify right side
    665,074.80x = 309,479,595,694.27
  5. Step 5: Solve for x
    x = 309,479,595,694.27/665,074.80
  6. Step 6: Final answer
    x = 465,330.51

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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.