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Finding the Fourth Proportional to 553,629.69, 764,008.98 and 298,980.88

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Solution

The fourth proportional to 553,629.69, 764,008.98 and 298,980.88 is: 412,593.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,629.69 : 764,008.98 = 298,980.88 : x
  2. Step 2: Convert to fraction form
    553,629.69/764,008.98 = 298,980.88/x
  3. Step 3: Cross multiply
    553,629.69x = 764,008.98 × 298,980.88
  4. Step 4: Simplify right side
    553,629.69x = 228,424,077,168.30
  5. Step 5: Solve for x
    x = 228,424,077,168.30/553,629.69
  6. Step 6: Final answer
    x = 412,593.62

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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.