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Finding the Fourth Proportional to 418,880.40, 627,629.40 and 356,672.40

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Solution

The fourth proportional to 418,880.40, 627,629.40 and 356,672.40 is: 534,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,880.40 : 627,629.40 = 356,672.40 : x
  2. Step 2: Convert to fraction form
    418,880.40/627,629.40 = 356,672.40/x
  3. Step 3: Cross multiply
    418,880.40x = 627,629.40 × 356,672.40
  4. Step 4: Simplify right side
    418,880.40x = 223,858,084,408.56
  5. Step 5: Solve for x
    x = 223,858,084,408.56/418,880.40
  6. Step 6: Final answer
    x = 534,420.05

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1.5x scale

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.