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Finding the Fourth Proportional to 633,431.67, 874,124.90 and 343,040.87

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Solution

The fourth proportional to 633,431.67, 874,124.90 and 343,040.87 is: 473,390.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,431.67 : 874,124.90 = 343,040.87 : x
  2. Step 2: Convert to fraction form
    633,431.67/874,124.90 = 343,040.87/x
  3. Step 3: Cross multiply
    633,431.67x = 874,124.90 × 343,040.87
  4. Step 4: Simplify right side
    633,431.67x = 299,860,564,469.46
  5. Step 5: Solve for x
    x = 299,860,564,469.46/633,431.67
  6. Step 6: Final answer
    x = 473,390.55

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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.