Home / 742,850.96-1,025,157.48-420,555.20

Finding the Fourth Proportional to 742,850.96, 1,025,157.48 and 420,555.20

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Solution

The fourth proportional to 742,850.96, 1,025,157.48 and 420,555.20 is: 580,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,850.96 : 1,025,157.48 = 420,555.20 : x
  2. Step 2: Convert to fraction form
    742,850.96/1,025,157.48 = 420,555.20/x
  3. Step 3: Cross multiply
    742,850.96x = 1,025,157.48 × 420,555.20
  4. Step 4: Simplify right side
    742,850.96x = 431,135,309,032.90
  5. Step 5: Solve for x
    x = 431,135,309,032.90/742,850.96
  6. Step 6: Final answer
    x = 580,379.29

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.