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Finding the Fourth Proportional to 665,161.91, 917,923.49 and 363,355.91

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Solution

The fourth proportional to 665,161.91, 917,923.49 and 363,355.91 is: 501,431.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,161.91 : 917,923.49 = 363,355.91 : x
  2. Step 2: Convert to fraction form
    665,161.91/917,923.49 = 363,355.91/x
  3. Step 3: Cross multiply
    665,161.91x = 917,923.49 × 363,355.91
  4. Step 4: Simplify right side
    665,161.91x = 333,532,918,612.93
  5. Step 5: Solve for x
    x = 333,532,918,612.93/665,161.91
  6. Step 6: Final answer
    x = 501,431.18

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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.