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Finding the Fourth Proportional to 493,836.60, 739,880.10 and 418,603.80

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Solution

The fourth proportional to 493,836.60, 739,880.10 and 418,603.80 is: 627,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,836.60 : 739,880.10 = 418,603.80 : x
  2. Step 2: Convert to fraction form
    493,836.60/739,880.10 = 418,603.80/x
  3. Step 3: Cross multiply
    493,836.60x = 739,880.10 × 418,603.80
  4. Step 4: Simplify right side
    493,836.60x = 309,716,621,404.38
  5. Step 5: Solve for x
    x = 309,716,621,404.38/493,836.60
  6. Step 6: Final answer
    x = 627,164.17

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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.