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Finding the Fourth Proportional to 489,666.60, 734,499.90 and 419,682.60

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Solution

The fourth proportional to 489,666.60, 734,499.90 and 419,682.60 is: 629,523.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,666.60 : 734,499.90 = 419,682.60 : x
  2. Step 2: Convert to fraction form
    489,666.60/734,499.90 = 419,682.60/x
  3. Step 3: Cross multiply
    489,666.60x = 734,499.90 × 419,682.60
  4. Step 4: Simplify right side
    489,666.60x = 308,256,827,731.74
  5. Step 5: Solve for x
    x = 308,256,827,731.74/489,666.60
  6. Step 6: Final answer
    x = 629,523.90

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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.