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Finding the Fourth Proportional to 490,872.80, 736,309.20 and 403,392.80

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Solution

The fourth proportional to 490,872.80, 736,309.20 and 403,392.80 is: 605,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,872.80 : 736,309.20 = 403,392.80 : x
  2. Step 2: Convert to fraction form
    490,872.80/736,309.20 = 403,392.80/x
  3. Step 3: Cross multiply
    490,872.80x = 736,309.20 × 403,392.80
  4. Step 4: Simplify right side
    490,872.80x = 297,021,829,853.76
  5. Step 5: Solve for x
    x = 297,021,829,853.76/490,872.80
  6. Step 6: Final answer
    x = 605,089.20

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Similar ratio
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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.