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Finding the Fourth Proportional to 669,352.08, 923,363.64 and 427,380.24

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Solution

The fourth proportional to 669,352.08, 923,363.64 and 427,380.24 is: 589,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,352.08 : 923,363.64 = 427,380.24 : x
  2. Step 2: Convert to fraction form
    669,352.08/923,363.64 = 427,380.24/x
  3. Step 3: Cross multiply
    669,352.08x = 923,363.64 × 427,380.24
  4. Step 4: Simplify right side
    669,352.08x = 394,627,374,070.47
  5. Step 5: Solve for x
    x = 394,627,374,070.47/669,352.08
  6. Step 6: Final answer
    x = 589,566.22

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.