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Finding the Fourth Proportional to 640,731.89, 884,247.89 and 368,793.02

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Solution

The fourth proportional to 640,731.89, 884,247.89 and 368,793.02 is: 508,956.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,731.89 : 884,247.89 = 368,793.02 : x
  2. Step 2: Convert to fraction form
    640,731.89/884,247.89 = 368,793.02/x
  3. Step 3: Cross multiply
    640,731.89x = 884,247.89 × 368,793.02
  4. Step 4: Simplify right side
    640,731.89x = 326,104,443,516.52
  5. Step 5: Solve for x
    x = 326,104,443,516.52/640,731.89
  6. Step 6: Final answer
    x = 508,956.17

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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.