Home / 669,905.08-1,003,500.06-309,563.62

Finding the Fourth Proportional to 669,905.08, 1,003,500.06 and 309,563.62

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Solution

The fourth proportional to 669,905.08, 1,003,500.06 and 309,563.62 is: 463,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,905.08 : 1,003,500.06 = 309,563.62 : x
  2. Step 2: Convert to fraction form
    669,905.08/1,003,500.06 = 309,563.62/x
  3. Step 3: Cross multiply
    669,905.08x = 1,003,500.06 × 309,563.62
  4. Step 4: Simplify right side
    669,905.08x = 310,647,111,243.82
  5. Step 5: Solve for x
    x = 310,647,111,243.82/669,905.08
  6. Step 6: Final answer
    x = 463,718.10

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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.