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Finding the Fourth Proportional to 554,015.34, 764,601.92 and 321,493.50

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Solution

The fourth proportional to 554,015.34, 764,601.92 and 321,493.50 is: 443,696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,015.34 : 764,601.92 = 321,493.50 : x
  2. Step 2: Convert to fraction form
    554,015.34/764,601.92 = 321,493.50/x
  3. Step 3: Cross multiply
    554,015.34x = 764,601.92 × 321,493.50
  4. Step 4: Simplify right side
    554,015.34x = 245,814,547,367.52
  5. Step 5: Solve for x
    x = 245,814,547,367.52/554,015.34
  6. Step 6: Final answer
    x = 443,696.28

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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.