Home / 920,197-1,269,899.88-501,120.34

Finding the Fourth Proportional to 920,197, 1,269,899.88 and 501,120.34

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Solution

The fourth proportional to 920,197, 1,269,899.88 and 501,120.34 is: 691,561.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,197 : 1,269,899.88 = 501,120.34 : x
  2. Step 2: Convert to fraction form
    920,197/1,269,899.88 = 501,120.34/x
  3. Step 3: Cross multiply
    920,197x = 1,269,899.88 × 501,120.34
  4. Step 4: Simplify right side
    920,197x = 636,372,659,631.56
  5. Step 5: Solve for x
    x = 636,372,659,631.56/920,197
  6. Step 6: Final answer
    x = 691,561.33

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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.