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Finding the Fourth Proportional to 553,647.75, 764,033.85 and 298,998.90

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Solution

The fourth proportional to 553,647.75, 764,033.85 and 298,998.90 is: 412,618.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,647.75 : 764,033.85 = 298,998.90 : x
  2. Step 2: Convert to fraction form
    553,647.75/764,033.85 = 298,998.90/x
  3. Step 3: Cross multiply
    553,647.75x = 764,033.85 × 298,998.90
  4. Step 4: Simplify right side
    553,647.75x = 228,445,280,712.77
  5. Step 5: Solve for x
    x = 228,445,280,712.77/553,647.75
  6. Step 6: Final answer
    x = 412,618.46

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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.