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Finding the Fourth Proportional to 610,517.87, 916,325.66 and 326,451.22

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Solution

The fourth proportional to 610,517.87, 916,325.66 and 326,451.22 is: 489,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,517.87 : 916,325.66 = 326,451.22 : x
  2. Step 2: Convert to fraction form
    610,517.87/916,325.66 = 326,451.22/x
  3. Step 3: Cross multiply
    610,517.87x = 916,325.66 × 326,451.22
  4. Step 4: Simplify right side
    610,517.87x = 299,135,628,149.62
  5. Step 5: Solve for x
    x = 299,135,628,149.62/610,517.87
  6. Step 6: Final answer
    x = 489,970.31

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1.5x scale

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.