Home / 669,324.36-1,003,986.90-420,181.32

Finding the Fourth Proportional to 669,324.36, 1,003,986.90 and 420,181.32

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Solution

The fourth proportional to 669,324.36, 1,003,986.90 and 420,181.32 is: 630,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,324.36 : 1,003,986.90 = 420,181.32 : x
  2. Step 2: Convert to fraction form
    669,324.36/1,003,986.90 = 420,181.32/x
  3. Step 3: Cross multiply
    669,324.36x = 1,003,986.90 × 420,181.32
  4. Step 4: Simplify right side
    669,324.36x = 421,856,540,904.71
  5. Step 5: Solve for x
    x = 421,856,540,904.71/669,324.36
  6. Step 6: Final answer
    x = 630,272.21

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Double scale
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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.