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Finding the Fourth Proportional to 490,812.40, 736,218.60 and 469,817.20

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Solution

The fourth proportional to 490,812.40, 736,218.60 and 469,817.20 is: 704,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,812.40 : 736,218.60 = 469,817.20 : x
  2. Step 2: Convert to fraction form
    490,812.40/736,218.60 = 469,817.20/x
  3. Step 3: Cross multiply
    490,812.40x = 736,218.60 × 469,817.20
  4. Step 4: Simplify right side
    490,812.40x = 345,888,161,239.92
  5. Step 5: Solve for x
    x = 345,888,161,239.92/490,812.40
  6. Step 6: Final answer
    x = 704,725.80

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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.