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Finding the Fourth Proportional to 640,730.39, 884,245.82 and 368,791.52

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Solution

The fourth proportional to 640,730.39, 884,245.82 and 368,791.52 is: 508,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,730.39 : 884,245.82 = 368,791.52 : x
  2. Step 2: Convert to fraction form
    640,730.39/884,245.82 = 368,791.52/x
  3. Step 3: Cross multiply
    640,730.39x = 884,245.82 × 368,791.52
  4. Step 4: Simplify right side
    640,730.39x = 326,102,353,746.26
  5. Step 5: Solve for x
    x = 326,102,353,746.26/640,730.39
  6. Step 6: Final answer
    x = 508,954.10

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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.