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Finding the Fourth Proportional to 665,141.12, 917,893.32 and 363,335.12

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Solution

The fourth proportional to 665,141.12, 917,893.32 and 363,335.12 is: 501,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,141.12 : 917,893.32 = 363,335.12 : x
  2. Step 2: Convert to fraction form
    665,141.12/917,893.32 = 363,335.12/x
  3. Step 3: Cross multiply
    665,141.12x = 917,893.32 × 363,335.12
  4. Step 4: Simplify right side
    665,141.12x = 333,502,879,569.40
  5. Step 5: Solve for x
    x = 333,502,879,569.40/665,141.12
  6. Step 6: Final answer
    x = 501,401.69

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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.