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Finding the Fourth Proportional to 669,204.24, 918,379.20 and 664,480.32

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Solution

The fourth proportional to 669,204.24, 918,379.20 and 664,480.32 is: 911,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,204.24 : 918,379.20 = 664,480.32 : x
  2. Step 2: Convert to fraction form
    669,204.24/918,379.20 = 664,480.32/x
  3. Step 3: Cross multiply
    669,204.24x = 918,379.20 × 664,480.32
  4. Step 4: Simplify right side
    669,204.24x = 610,244,904,697.34
  5. Step 5: Solve for x
    x = 610,244,904,697.34/669,204.24
  6. Step 6: Final answer
    x = 911,896.35

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.