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Finding the Fourth Proportional to 626,439.96, 864,435.24 and 354,493.80

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Solution

The fourth proportional to 626,439.96, 864,435.24 and 354,493.80 is: 489,172.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,439.96 : 864,435.24 = 354,493.80 : x
  2. Step 2: Convert to fraction form
    626,439.96/864,435.24 = 354,493.80/x
  3. Step 3: Cross multiply
    626,439.96x = 864,435.24 × 354,493.80
  4. Step 4: Simplify right side
    626,439.96x = 306,436,933,081.51
  5. Step 5: Solve for x
    x = 306,436,933,081.51/626,439.96
  6. Step 6: Final answer
    x = 489,172.07

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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.