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Finding the Fourth Proportional to 641,498.61, 962,461.62 and 215,076.63

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Solution

The fourth proportional to 641,498.61, 962,461.62 and 215,076.63 is: 322,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,498.61 : 962,461.62 = 215,076.63 : x
  2. Step 2: Convert to fraction form
    641,498.61/962,461.62 = 215,076.63/x
  3. Step 3: Cross multiply
    641,498.61x = 962,461.62 × 215,076.63
  4. Step 4: Simplify right side
    641,498.61x = 207,003,001,733.94
  5. Step 5: Solve for x
    x = 207,003,001,733.94/641,498.61
  6. Step 6: Final answer
    x = 322,686.59

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Double scale
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1.5x scale

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.