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Finding the Fourth Proportional to 493,837.60, 739,881.60 and 418,604.80

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Solution

The fourth proportional to 493,837.60, 739,881.60 and 418,604.80 is: 627,165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,837.60 : 739,881.60 = 418,604.80 : x
  2. Step 2: Convert to fraction form
    493,837.60/739,881.60 = 418,604.80/x
  3. Step 3: Cross multiply
    493,837.60x = 739,881.60 × 418,604.80
  4. Step 4: Simplify right side
    493,837.60x = 309,717,989,191.68
  5. Step 5: Solve for x
    x = 309,717,989,191.68/493,837.60
  6. Step 6: Final answer
    x = 627,165.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.