Home / 1,121,288.96-1,682,155.36-411,323.20

Finding the Fourth Proportional to 1,121,288.96, 1,682,155.36 and 411,323.20

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Solution

The fourth proportional to 1,121,288.96, 1,682,155.36 and 411,323.20 is: 617,066.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,288.96 : 1,682,155.36 = 411,323.20 : x
  2. Step 2: Convert to fraction form
    1,121,288.96/1,682,155.36 = 411,323.20/x
  3. Step 3: Cross multiply
    1,121,288.96x = 1,682,155.36 × 411,323.20
  4. Step 4: Simplify right side
    1,121,288.96x = 691,909,525,572.35
  5. Step 5: Solve for x
    x = 691,909,525,572.35/1,121,288.96
  6. Step 6: Final answer
    x = 617,066.21

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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.