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Finding the Fourth Proportional to 553,912.68, 764,400.04 and 299,264.42

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Solution

The fourth proportional to 553,912.68, 764,400.04 and 299,264.42 is: 412,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,912.68 : 764,400.04 = 299,264.42 : x
  2. Step 2: Convert to fraction form
    553,912.68/764,400.04 = 299,264.42/x
  3. Step 3: Cross multiply
    553,912.68x = 764,400.04 × 299,264.42
  4. Step 4: Simplify right side
    553,912.68x = 228,757,734,618.58
  5. Step 5: Solve for x
    x = 228,757,734,618.58/553,912.68
  6. Step 6: Final answer
    x = 412,985.19

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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.