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Finding the Fourth Proportional to 641,671.61, 962,175.17 and 342,071.72

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Solution

The fourth proportional to 641,671.61, 962,175.17 and 342,071.72 is: 512,930.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,671.61 : 962,175.17 = 342,071.72 : x
  2. Step 2: Convert to fraction form
    641,671.61/962,175.17 = 342,071.72/x
  3. Step 3: Cross multiply
    641,671.61x = 962,175.17 × 342,071.72
  4. Step 4: Simplify right side
    641,671.61x = 329,132,908,821.96
  5. Step 5: Solve for x
    x = 329,132,908,821.96/641,671.61
  6. Step 6: Final answer
    x = 512,930.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.