Home / 918,901.92-1,378,352.88-419,916

Finding the Fourth Proportional to 918,901.92, 1,378,352.88 and 419,916

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Solution

The fourth proportional to 918,901.92, 1,378,352.88 and 419,916 is: 629,874.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,901.92 : 1,378,352.88 = 419,916 : x
  2. Step 2: Convert to fraction form
    918,901.92/1,378,352.88 = 419,916/x
  3. Step 3: Cross multiply
    918,901.92x = 1,378,352.88 × 419,916
  4. Step 4: Simplify right side
    918,901.92x = 578,792,427,958.08
  5. Step 5: Solve for x
    x = 578,792,427,958.08/918,901.92
  6. Step 6: Final answer
    x = 629,874.00

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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.