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Finding the Fourth Proportional to 419,436.88, 578,880.03 and 247,403.44

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Solution

The fourth proportional to 419,436.88, 578,880.03 and 247,403.44 is: 341,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,436.88 : 578,880.03 = 247,403.44 : x
  2. Step 2: Convert to fraction form
    419,436.88/578,880.03 = 247,403.44/x
  3. Step 3: Cross multiply
    419,436.88x = 578,880.03 × 247,403.44
  4. Step 4: Simplify right side
    419,436.88x = 143,216,910,769.30
  5. Step 5: Solve for x
    x = 143,216,910,769.30/419,436.88
  6. Step 6: Final answer
    x = 341,450.45

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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.