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Finding the Fourth Proportional to 669,485.42, 923,886.15 and 363,558.86

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Solution

The fourth proportional to 669,485.42, 923,886.15 and 363,558.86 is: 501,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,485.42 : 923,886.15 = 363,558.86 : x
  2. Step 2: Convert to fraction form
    669,485.42/923,886.15 = 363,558.86/x
  3. Step 3: Cross multiply
    669,485.42x = 923,886.15 × 363,558.86
  4. Step 4: Simplify right side
    669,485.42x = 335,886,995,463.79
  5. Step 5: Solve for x
    x = 335,886,995,463.79/669,485.42
  6. Step 6: Final answer
    x = 501,709.20

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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.