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Finding the Fourth Proportional to 629,266.50, 868,716.09 and 489,254.64

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Solution

The fourth proportional to 629,266.50, 868,716.09 and 489,254.64 is: 675,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,266.50 : 868,716.09 = 489,254.64 : x
  2. Step 2: Convert to fraction form
    629,266.50/868,716.09 = 489,254.64/x
  3. Step 3: Cross multiply
    629,266.50x = 868,716.09 × 489,254.64
  4. Step 4: Simplify right side
    629,266.50x = 425,023,377,875.16
  5. Step 5: Solve for x
    x = 425,023,377,875.16/629,266.50
  6. Step 6: Final answer
    x = 675,426.67

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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.