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Finding the Fourth Proportional to 490,822.60, 736,233.90 and 266,290.60

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Solution

The fourth proportional to 490,822.60, 736,233.90 and 266,290.60 is: 399,435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,822.60 : 736,233.90 = 266,290.60 : x
  2. Step 2: Convert to fraction form
    490,822.60/736,233.90 = 266,290.60/x
  3. Step 3: Cross multiply
    490,822.60x = 736,233.90 × 266,290.60
  4. Step 4: Simplify right side
    490,822.60x = 196,052,166,971.34
  5. Step 5: Solve for x
    x = 196,052,166,971.34/490,822.60
  6. Step 6: Final answer
    x = 399,435.90

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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.