Home / 419,947.84-579,511.32-247,921.21

Finding the Fourth Proportional to 419,947.84, 579,511.32 and 247,921.21

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Solution

The fourth proportional to 419,947.84, 579,511.32 and 247,921.21 is: 342,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,947.84 : 579,511.32 = 247,921.21 : x
  2. Step 2: Convert to fraction form
    419,947.84/579,511.32 = 247,921.21/x
  3. Step 3: Cross multiply
    419,947.84x = 579,511.32 × 247,921.21
  4. Step 4: Simplify right side
    419,947.84x = 143,673,151,064.01
  5. Step 5: Solve for x
    x = 143,673,151,064.01/419,947.84
  6. Step 6: Final answer
    x = 342,121.42

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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.