Home / 628,618.78-867,493.97-342,140.95

Finding the Fourth Proportional to 628,618.78, 867,493.97 and 342,140.95

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Solution

The fourth proportional to 628,618.78, 867,493.97 and 342,140.95 is: 472,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,618.78 : 867,493.97 = 342,140.95 : x
  2. Step 2: Convert to fraction form
    628,618.78/867,493.97 = 342,140.95/x
  3. Step 3: Cross multiply
    628,618.78x = 867,493.97 × 342,140.95
  4. Step 4: Simplify right side
    628,618.78x = 296,805,211,015.07
  5. Step 5: Solve for x
    x = 296,805,211,015.07/628,618.78
  6. Step 6: Final answer
    x = 472,154.54

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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.