Home / 938,976.40-1,408,464.60-274,128.40

Finding the Fourth Proportional to 938,976.40, 1,408,464.60 and 274,128.40

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Solution

The fourth proportional to 938,976.40, 1,408,464.60 and 274,128.40 is: 411,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,976.40 : 1,408,464.60 = 274,128.40 : x
  2. Step 2: Convert to fraction form
    938,976.40/1,408,464.60 = 274,128.40/x
  3. Step 3: Cross multiply
    938,976.40x = 1,408,464.60 × 274,128.40
  4. Step 4: Simplify right side
    938,976.40x = 386,100,147,254.64
  5. Step 5: Solve for x
    x = 386,100,147,254.64/938,976.40
  6. Step 6: Final answer
    x = 411,192.60

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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.