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Finding the Fourth Proportional to 624,766.60, 937,149.90 and 388,570.60

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Solution

The fourth proportional to 624,766.60, 937,149.90 and 388,570.60 is: 582,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,766.60 : 937,149.90 = 388,570.60 : x
  2. Step 2: Convert to fraction form
    624,766.60/937,149.90 = 388,570.60/x
  3. Step 3: Cross multiply
    624,766.60x = 937,149.90 × 388,570.60
  4. Step 4: Simplify right side
    624,766.60x = 364,148,898,932.94
  5. Step 5: Solve for x
    x = 364,148,898,932.94/624,766.60
  6. Step 6: Final answer
    x = 582,855.90

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Similar ratio
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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.