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Finding the Fourth Proportional to 640,622.52, 884,146.86 and 368,684.82

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Solution

The fourth proportional to 640,622.52, 884,146.86 and 368,684.82 is: 508,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,622.52 : 884,146.86 = 368,684.82 : x
  2. Step 2: Convert to fraction form
    640,622.52/884,146.86 = 368,684.82/x
  3. Step 3: Cross multiply
    640,622.52x = 884,146.86 × 368,684.82
  4. Step 4: Simplify right side
    640,622.52x = 325,971,525,932.67
  5. Step 5: Solve for x
    x = 325,971,525,932.67/640,622.52
  6. Step 6: Final answer
    x = 508,835.57

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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.