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Finding the Fourth Proportional to 553,634.67, 764,015.85 and 298,985.85

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Solution

The fourth proportional to 553,634.67, 764,015.85 and 298,985.85 is: 412,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,634.67 : 764,015.85 = 298,985.85 : x
  2. Step 2: Convert to fraction form
    553,634.67/764,015.85 = 298,985.85/x
  3. Step 3: Cross multiply
    553,634.67x = 764,015.85 × 298,985.85
  4. Step 4: Simplify right side
    553,634.67x = 228,429,928,325.72
  5. Step 5: Solve for x
    x = 228,429,928,325.72/553,634.67
  6. Step 6: Final answer
    x = 412,600.48

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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.