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Finding the Fourth Proportional to 640,530.52, 884,020.02 and 368,592.86

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Solution

The fourth proportional to 640,530.52, 884,020.02 and 368,592.86 is: 508,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,530.52 : 884,020.02 = 368,592.86 : x
  2. Step 2: Convert to fraction form
    640,530.52/884,020.02 = 368,592.86/x
  3. Step 3: Cross multiply
    640,530.52x = 884,020.02 × 368,592.86
  4. Step 4: Simplify right side
    640,530.52x = 325,843,467,469.06
  5. Step 5: Solve for x
    x = 325,843,467,469.06/640,530.52
  6. Step 6: Final answer
    x = 508,708.73

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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.