Home / 764,819.48-1,055,428.65-420,654.06

Finding the Fourth Proportional to 764,819.48, 1,055,428.65 and 420,654.06

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Solution

The fourth proportional to 764,819.48, 1,055,428.65 and 420,654.06 is: 580,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,819.48 : 1,055,428.65 = 420,654.06 : x
  2. Step 2: Convert to fraction form
    764,819.48/1,055,428.65 = 420,654.06/x
  3. Step 3: Cross multiply
    764,819.48x = 1,055,428.65 × 420,654.06
  4. Step 4: Simplify right side
    764,819.48x = 443,970,346,662.82
  5. Step 5: Solve for x
    x = 443,970,346,662.82/764,819.48
  6. Step 6: Final answer
    x = 580,490.37

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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.