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Finding the Fourth Proportional to 669,528.72, 923,949.60 and 367,722.72

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Solution

The fourth proportional to 669,528.72, 923,949.60 and 367,722.72 is: 507,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,528.72 : 923,949.60 = 367,722.72 : x
  2. Step 2: Convert to fraction form
    669,528.72/923,949.60 = 367,722.72/x
  3. Step 3: Cross multiply
    669,528.72x = 923,949.60 × 367,722.72
  4. Step 4: Simplify right side
    669,528.72x = 339,757,260,054.91
  5. Step 5: Solve for x
    x = 339,757,260,054.91/669,528.72
  6. Step 6: Final answer
    x = 507,457.34

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Double scale
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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.