Home / 3,478,991.40-5,218,487.10-920,201.40

Finding the Fourth Proportional to 3,478,991.40, 5,218,487.10 and 920,201.40

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Solution

The fourth proportional to 3,478,991.40, 5,218,487.10 and 920,201.40 is: 1,380,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478,991.40 : 5,218,487.10 = 920,201.40 : x
  2. Step 2: Convert to fraction form
    3,478,991.40/5,218,487.10 = 920,201.40/x
  3. Step 3: Cross multiply
    3,478,991.40x = 5,218,487.10 × 920,201.40
  4. Step 4: Simplify right side
    3,478,991.40x = 4,802,059,135,301.94
  5. Step 5: Solve for x
    x = 4,802,059,135,301.94/3,478,991.40
  6. Step 6: Final answer
    x = 1,380,302.10

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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.