Home / 1,990,221.20-2,985,331.80-494,313.20

Finding the Fourth Proportional to 1,990,221.20, 2,985,331.80 and 494,313.20

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Solution

The fourth proportional to 1,990,221.20, 2,985,331.80 and 494,313.20 is: 741,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,221.20 : 2,985,331.80 = 494,313.20 : x
  2. Step 2: Convert to fraction form
    1,990,221.20/2,985,331.80 = 494,313.20/x
  3. Step 3: Cross multiply
    1,990,221.20x = 2,985,331.80 × 494,313.20
  4. Step 4: Simplify right side
    1,990,221.20x = 1,475,688,915,119.76
  5. Step 5: Solve for x
    x = 1,475,688,915,119.76/1,990,221.20
  6. Step 6: Final answer
    x = 741,469.80

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Double scale
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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.