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Finding the Fourth Proportional to 553,645.23, 764,030.43 and 298,996.44

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Solution

The fourth proportional to 553,645.23, 764,030.43 and 298,996.44 is: 412,615.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,645.23 : 764,030.43 = 298,996.44 : x
  2. Step 2: Convert to fraction form
    553,645.23/764,030.43 = 298,996.44/x
  3. Step 3: Cross multiply
    553,645.23x = 764,030.43 × 298,996.44
  4. Step 4: Simplify right side
    553,645.23x = 228,442,378,621.67
  5. Step 5: Solve for x
    x = 228,442,378,621.67/553,645.23
  6. Step 6: Final answer
    x = 412,615.09

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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.