Home / 665,019.70-997,669.73-215,705.61

Finding the Fourth Proportional to 665,019.70, 997,669.73 and 215,705.61

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Solution

The fourth proportional to 665,019.70, 997,669.73 and 215,705.61 is: 323,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,019.70 : 997,669.73 = 215,705.61 : x
  2. Step 2: Convert to fraction form
    665,019.70/997,669.73 = 215,705.61/x
  3. Step 3: Cross multiply
    665,019.70x = 997,669.73 × 215,705.61
  4. Step 4: Simplify right side
    665,019.70x = 215,202,958,227.45
  5. Step 5: Solve for x
    x = 215,202,958,227.45/665,019.70
  6. Step 6: Final answer
    x = 323,603.89

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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.