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Finding the Fourth Proportional to 640,755.16, 961,414.08 and 304,039.24

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Solution

The fourth proportional to 640,755.16, 961,414.08 and 304,039.24 is: 456,192.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,755.16 : 961,414.08 = 304,039.24 : x
  2. Step 2: Convert to fraction form
    640,755.16/961,414.08 = 304,039.24/x
  3. Step 3: Cross multiply
    640,755.16x = 961,414.08 × 304,039.24
  4. Step 4: Simplify right side
    640,755.16x = 292,307,606,208.50
  5. Step 5: Solve for x
    x = 292,307,606,208.50/640,755.16
  6. Step 6: Final answer
    x = 456,192.36

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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.