Home / 553,837.72-764,311.80-308,828.12

Finding the Fourth Proportional to 553,837.72, 764,311.80 and 308,828.12

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Solution

The fourth proportional to 553,837.72, 764,311.80 and 308,828.12 is: 426,191.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,837.72 : 764,311.80 = 308,828.12 : x
  2. Step 2: Convert to fraction form
    553,837.72/764,311.80 = 308,828.12/x
  3. Step 3: Cross multiply
    553,837.72x = 764,311.80 × 308,828.12
  4. Step 4: Simplify right side
    553,837.72x = 236,040,976,287.82
  5. Step 5: Solve for x
    x = 236,040,976,287.82/553,837.72
  6. Step 6: Final answer
    x = 426,191.59

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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.