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Finding the Fourth Proportional to 490,203.20, 735,304.80 and 440,436.80

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Solution

The fourth proportional to 490,203.20, 735,304.80 and 440,436.80 is: 660,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,203.20 : 735,304.80 = 440,436.80 : x
  2. Step 2: Convert to fraction form
    490,203.20/735,304.80 = 440,436.80/x
  3. Step 3: Cross multiply
    490,203.20x = 735,304.80 × 440,436.80
  4. Step 4: Simplify right side
    490,203.20x = 323,855,293,136.64
  5. Step 5: Solve for x
    x = 323,855,293,136.64/490,203.20
  6. Step 6: Final answer
    x = 660,655.20

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Double scale
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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.