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Finding the Fourth Proportional to 886,912.60, 1,330,368.90 and 326,349.40

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Solution

The fourth proportional to 886,912.60, 1,330,368.90 and 326,349.40 is: 489,524.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,912.60 : 1,330,368.90 = 326,349.40 : x
  2. Step 2: Convert to fraction form
    886,912.60/1,330,368.90 = 326,349.40/x
  3. Step 3: Cross multiply
    886,912.60x = 1,330,368.90 × 326,349.40
  4. Step 4: Simplify right side
    886,912.60x = 434,165,092,293.66
  5. Step 5: Solve for x
    x = 434,165,092,293.66/886,912.60
  6. Step 6: Final answer
    x = 489,524.10

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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.