Home / 628,936.84-867,921.60-342,451.72

Finding the Fourth Proportional to 628,936.84, 867,921.60 and 342,451.72

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Solution

The fourth proportional to 628,936.84, 867,921.60 and 342,451.72 is: 472,577.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,936.84 : 867,921.60 = 342,451.72 : x
  2. Step 2: Convert to fraction form
    628,936.84/867,921.60 = 342,451.72/x
  3. Step 3: Cross multiply
    628,936.84x = 867,921.60 × 342,451.72
  4. Step 4: Simplify right side
    628,936.84x = 297,221,244,745.15
  5. Step 5: Solve for x
    x = 297,221,244,745.15/628,936.84
  6. Step 6: Final answer
    x = 472,577.25

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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.