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Finding the Fourth Proportional to 640,026.68, 883,302.72 and 368,104.82

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Solution

The fourth proportional to 640,026.68, 883,302.72 and 368,104.82 is: 508,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,026.68 : 883,302.72 = 368,104.82 : x
  2. Step 2: Convert to fraction form
    640,026.68/883,302.72 = 368,104.82/x
  3. Step 3: Cross multiply
    640,026.68x = 883,302.72 × 368,104.82
  4. Step 4: Simplify right side
    640,026.68x = 325,147,988,751.11
  5. Step 5: Solve for x
    x = 325,147,988,751.11/640,026.68
  6. Step 6: Final answer
    x = 508,022.55

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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.