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Finding the Fourth Proportional to 665,169.76, 917,891.92 and 363,364

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Solution

The fourth proportional to 665,169.76, 917,891.92 and 363,364 is: 501,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,169.76 : 917,891.92 = 363,364 : x
  2. Step 2: Convert to fraction form
    665,169.76/917,891.92 = 363,364/x
  3. Step 3: Cross multiply
    665,169.76x = 917,891.92 × 363,364
  4. Step 4: Simplify right side
    665,169.76x = 333,528,879,618.88
  5. Step 5: Solve for x
    x = 333,528,879,618.88/665,169.76
  6. Step 6: Final answer
    x = 501,419.19

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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.