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Finding the Fourth Proportional to 478,600.20, 660,466.90 and 263,740.20

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Solution

The fourth proportional to 478,600.20, 660,466.90 and 263,740.20 is: 363,960.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,600.20 : 660,466.90 = 263,740.20 : x
  2. Step 2: Convert to fraction form
    478,600.20/660,466.90 = 263,740.20/x
  3. Step 3: Cross multiply
    478,600.20x = 660,466.90 × 263,740.20
  4. Step 4: Simplify right side
    478,600.20x = 174,191,672,299.38
  5. Step 5: Solve for x
    x = 174,191,672,299.38/478,600.20
  6. Step 6: Final answer
    x = 363,960.72

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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.