Home / 764,142.21-1,054,539.96-419,971.92

Finding the Fourth Proportional to 764,142.21, 1,054,539.96 and 419,971.92

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Solution

The fourth proportional to 764,142.21, 1,054,539.96 and 419,971.92 is: 579,574.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,142.21 : 1,054,539.96 = 419,971.92 : x
  2. Step 2: Convert to fraction form
    764,142.21/1,054,539.96 = 419,971.92/x
  3. Step 3: Cross multiply
    764,142.21x = 1,054,539.96 × 419,971.92
  4. Step 4: Simplify right side
    764,142.21x = 442,877,171,717.92
  5. Step 5: Solve for x
    x = 442,877,171,717.92/764,142.21
  6. Step 6: Final answer
    x = 579,574.28

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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.