Home / 627,631.60-940,864.20-438,091.60

Finding the Fourth Proportional to 627,631.60, 940,864.20 and 438,091.60

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Solution

The fourth proportional to 627,631.60, 940,864.20 and 438,091.60 is: 656,730.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,631.60 : 940,864.20 = 438,091.60 : x
  2. Step 2: Convert to fraction form
    627,631.60/940,864.20 = 438,091.60/x
  3. Step 3: Cross multiply
    627,631.60x = 940,864.20 × 438,091.60
  4. Step 4: Simplify right side
    627,631.60x = 412,184,702,760.72
  5. Step 5: Solve for x
    x = 412,184,702,760.72/627,631.60
  6. Step 6: Final answer
    x = 656,730.32

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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.