Home / 920,261.77-1,380,226.44-321,394.20

Finding the Fourth Proportional to 920,261.77, 1,380,226.44 and 321,394.20

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Solution

The fourth proportional to 920,261.77, 1,380,226.44 and 321,394.20 is: 482,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,261.77 : 1,380,226.44 = 321,394.20 : x
  2. Step 2: Convert to fraction form
    920,261.77/1,380,226.44 = 321,394.20/x
  3. Step 3: Cross multiply
    920,261.77x = 1,380,226.44 × 321,394.20
  4. Step 4: Simplify right side
    920,261.77x = 443,596,772,502.65
  5. Step 5: Solve for x
    x = 443,596,772,502.65/920,261.77
  6. Step 6: Final answer
    x = 482,033.25

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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.