Home / 905,998.37-1,250,278.55-498,107.16

Finding the Fourth Proportional to 905,998.37, 1,250,278.55 and 498,107.16

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Solution

The fourth proportional to 905,998.37, 1,250,278.55 and 498,107.16 is: 687,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,998.37 : 1,250,278.55 = 498,107.16 : x
  2. Step 2: Convert to fraction form
    905,998.37/1,250,278.55 = 498,107.16/x
  3. Step 3: Cross multiply
    905,998.37x = 1,250,278.55 × 498,107.16
  4. Step 4: Simplify right side
    905,998.37x = 622,772,697,749.42
  5. Step 5: Solve for x
    x = 622,772,697,749.42/905,998.37
  6. Step 6: Final answer
    x = 687,388.32

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.