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Finding the Fourth Proportional to 640,661.52, 884,200.68 and 368,723.82

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Solution

The fourth proportional to 640,661.52, 884,200.68 and 368,723.82 is: 508,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,661.52 : 884,200.68 = 368,723.82 : x
  2. Step 2: Convert to fraction form
    640,661.52/884,200.68 = 368,723.82/x
  3. Step 3: Cross multiply
    640,661.52x = 884,200.68 × 368,723.82
  4. Step 4: Simplify right side
    640,661.52x = 326,025,852,376.20
  5. Step 5: Solve for x
    x = 326,025,852,376.20/640,661.52
  6. Step 6: Final answer
    x = 508,889.39

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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.