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Finding the Fourth Proportional to 626,743.08, 864,958.98 and 354,858.89

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Solution

The fourth proportional to 626,743.08, 864,958.98 and 354,858.89 is: 489,735.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,743.08 : 864,958.98 = 354,858.89 : x
  2. Step 2: Convert to fraction form
    626,743.08/864,958.98 = 354,858.89/x
  3. Step 3: Cross multiply
    626,743.08x = 864,958.98 × 354,858.89
  4. Step 4: Simplify right side
    626,743.08x = 306,938,379,213.54
  5. Step 5: Solve for x
    x = 306,938,379,213.54/626,743.08
  6. Step 6: Final answer
    x = 489,735.57

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1.5x scale

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.