Home / 628,868.73-867,795.07-356,942.17

Finding the Fourth Proportional to 628,868.73, 867,795.07 and 356,942.17

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Solution

The fourth proportional to 628,868.73, 867,795.07 and 356,942.17 is: 492,555.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,868.73 : 867,795.07 = 356,942.17 : x
  2. Step 2: Convert to fraction form
    628,868.73/867,795.07 = 356,942.17/x
  3. Step 3: Cross multiply
    628,868.73x = 867,795.07 × 356,942.17
  4. Step 4: Simplify right side
    628,868.73x = 309,752,649,277.42
  5. Step 5: Solve for x
    x = 309,752,649,277.42/628,868.73
  6. Step 6: Final answer
    x = 492,555.34

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Double scale
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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.