Home / 665,039.06-997,698.69-215,724.84

Finding the Fourth Proportional to 665,039.06, 997,698.69 and 215,724.84

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Solution

The fourth proportional to 665,039.06, 997,698.69 and 215,724.84 is: 323,632.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,039.06 : 997,698.69 = 215,724.84 : x
  2. Step 2: Convert to fraction form
    665,039.06/997,698.69 = 215,724.84/x
  3. Step 3: Cross multiply
    665,039.06x = 997,698.69 × 215,724.84
  4. Step 4: Simplify right side
    665,039.06x = 215,228,395,551.90
  5. Step 5: Solve for x
    x = 215,228,395,551.90/665,039.06
  6. Step 6: Final answer
    x = 323,632.71

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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.