Home / 1,205,998.20-1,808,997.30-307,438.20

Finding the Fourth Proportional to 1,205,998.20, 1,808,997.30 and 307,438.20

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Solution

The fourth proportional to 1,205,998.20, 1,808,997.30 and 307,438.20 is: 461,157.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,998.20 : 1,808,997.30 = 307,438.20 : x
  2. Step 2: Convert to fraction form
    1,205,998.20/1,808,997.30 = 307,438.20/x
  3. Step 3: Cross multiply
    1,205,998.20x = 1,808,997.30 × 307,438.20
  4. Step 4: Simplify right side
    1,205,998.20x = 556,154,873,716.86
  5. Step 5: Solve for x
    x = 556,154,873,716.86/1,205,998.20
  6. Step 6: Final answer
    x = 461,157.30

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