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Finding the Fourth Proportional to 641,383.78, 962,407.67 and 465,343.78

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Solution

The fourth proportional to 641,383.78, 962,407.67 and 465,343.78 is: 698,256.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,383.78 : 962,407.67 = 465,343.78 : x
  2. Step 2: Convert to fraction form
    641,383.78/962,407.67 = 465,343.78/x
  3. Step 3: Cross multiply
    641,383.78x = 962,407.67 × 465,343.78
  4. Step 4: Simplify right side
    641,383.78x = 447,850,423,058.79
  5. Step 5: Solve for x
    x = 447,850,423,058.79/641,383.78
  6. Step 6: Final answer
    x = 698,256.55

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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.