Home / 1,245,388.50-1,868,082.75-403,940.25

Finding the Fourth Proportional to 1,245,388.50, 1,868,082.75 and 403,940.25

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Solution

The fourth proportional to 1,245,388.50, 1,868,082.75 and 403,940.25 is: 605,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,388.50 : 1,868,082.75 = 403,940.25 : x
  2. Step 2: Convert to fraction form
    1,245,388.50/1,868,082.75 = 403,940.25/x
  3. Step 3: Cross multiply
    1,245,388.50x = 1,868,082.75 × 403,940.25
  4. Step 4: Simplify right side
    1,245,388.50x = 754,593,813,055.69
  5. Step 5: Solve for x
    x = 754,593,813,055.69/1,245,388.50
  6. Step 6: Final answer
    x = 605,910.38

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Double scale
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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.