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Finding the Fourth Proportional to 420,365.01, 630,653.13 and 120,846.14

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Solution

The fourth proportional to 420,365.01, 630,653.13 and 120,846.14 is: 181,299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,365.01 : 630,653.13 = 120,846.14 : x
  2. Step 2: Convert to fraction form
    420,365.01/630,653.13 = 120,846.14/x
  3. Step 3: Cross multiply
    420,365.01x = 630,653.13 × 120,846.14
  4. Step 4: Simplify right side
    420,365.01x = 76,211,993,286.15
  5. Step 5: Solve for x
    x = 76,211,993,286.15/420,365.01
  6. Step 6: Final answer
    x = 181,299.56

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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.