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Finding the Fourth Proportional to 553,857.95, 764,505.64 and 336,076.49

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Solution

The fourth proportional to 553,857.95, 764,505.64 and 336,076.49 is: 463,895.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,857.95 : 764,505.64 = 336,076.49 : x
  2. Step 2: Convert to fraction form
    553,857.95/764,505.64 = 336,076.49/x
  3. Step 3: Cross multiply
    553,857.95x = 764,505.64 × 336,076.49
  4. Step 4: Simplify right side
    553,857.95x = 256,932,374,407.76
  5. Step 5: Solve for x
    x = 256,932,374,407.76/553,857.95
  6. Step 6: Final answer
    x = 463,895.79

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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.