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Finding the Fourth Proportional to 553,843.80, 764,340.48 and 308,856.24

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Solution

The fourth proportional to 553,843.80, 764,340.48 and 308,856.24 is: 426,241.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,843.80 : 764,340.48 = 308,856.24 : x
  2. Step 2: Convert to fraction form
    553,843.80/764,340.48 = 308,856.24/x
  3. Step 3: Cross multiply
    553,843.80x = 764,340.48 × 308,856.24
  4. Step 4: Simplify right side
    553,843.80x = 236,071,326,732.60
  5. Step 5: Solve for x
    x = 236,071,326,732.60/553,843.80
  6. Step 6: Final answer
    x = 426,241.71

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1.5x scale

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.