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Finding the Fourth Proportional to 665,027.80, 917,760.22 and 363,221.80

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Solution

The fourth proportional to 665,027.80, 917,760.22 and 363,221.80 is: 501,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,027.80 : 917,760.22 = 363,221.80 : x
  2. Step 2: Convert to fraction form
    665,027.80/917,760.22 = 363,221.80/x
  3. Step 3: Cross multiply
    665,027.80x = 917,760.22 × 363,221.80
  4. Step 4: Simplify right side
    665,027.80x = 333,350,519,076.80
  5. Step 5: Solve for x
    x = 333,350,519,076.80/665,027.80
  6. Step 6: Final answer
    x = 501,258.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.