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Finding the Fourth Proportional to 554,009.58, 764,593.97 and 321,487.74

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Solution

The fourth proportional to 554,009.58, 764,593.97 and 321,487.74 is: 443,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,009.58 : 764,593.97 = 321,487.74 : x
  2. Step 2: Convert to fraction form
    554,009.58/764,593.97 = 321,487.74/x
  3. Step 3: Cross multiply
    554,009.58x = 764,593.97 × 321,487.74
  4. Step 4: Simplify right side
    554,009.58x = 245,807,587,432.93
  5. Step 5: Solve for x
    x = 245,807,587,432.93/554,009.58
  6. Step 6: Final answer
    x = 443,688.33

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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.