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Finding the Fourth Proportional to 553,900.77, 764,386.41 and 308,901.02

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Solution

The fourth proportional to 553,900.77, 764,386.41 and 308,901.02 is: 426,285.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,900.77 : 764,386.41 = 308,901.02 : x
  2. Step 2: Convert to fraction form
    553,900.77/764,386.41 = 308,901.02/x
  3. Step 3: Cross multiply
    553,900.77x = 764,386.41 × 308,901.02
  4. Step 4: Simplify right side
    553,900.77x = 236,119,741,723.14
  5. Step 5: Solve for x
    x = 236,119,741,723.14/553,900.77
  6. Step 6: Final answer
    x = 426,285.27

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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.