Home / 747,507.82-1,121,261.72-427,435.16

Finding the Fourth Proportional to 747,507.82, 1,121,261.72 and 427,435.16

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Solution

The fourth proportional to 747,507.82, 1,121,261.72 and 427,435.16 is: 641,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,507.82 : 1,121,261.72 = 427,435.16 : x
  2. Step 2: Convert to fraction form
    747,507.82/1,121,261.72 = 427,435.16/x
  3. Step 3: Cross multiply
    747,507.82x = 1,121,261.72 × 427,435.16
  4. Step 4: Simplify right side
    747,507.82x = 479,266,682,690.08
  5. Step 5: Solve for x
    x = 479,266,682,690.08/747,507.82
  6. Step 6: Final answer
    x = 641,152.73

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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.