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Finding the Fourth Proportional to 553,784.54, 764,223 and 299,135.84

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Solution

The fourth proportional to 553,784.54, 764,223 and 299,135.84 is: 412,807.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,784.54 : 764,223 = 299,135.84 : x
  2. Step 2: Convert to fraction form
    553,784.54/764,223 = 299,135.84/x
  3. Step 3: Cross multiply
    553,784.54x = 764,223 × 299,135.84
  4. Step 4: Simplify right side
    553,784.54x = 228,606,489,052.32
  5. Step 5: Solve for x
    x = 228,606,489,052.32/553,784.54
  6. Step 6: Final answer
    x = 412,807.64

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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.