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Finding the Fourth Proportional to 554,016.34, 764,603.30 and 321,494.50

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Solution

The fourth proportional to 554,016.34, 764,603.30 and 321,494.50 is: 443,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,016.34 : 764,603.30 = 321,494.50 : x
  2. Step 2: Convert to fraction form
    554,016.34/764,603.30 = 321,494.50/x
  3. Step 3: Cross multiply
    554,016.34x = 764,603.30 × 321,494.50
  4. Step 4: Simplify right side
    554,016.34x = 245,815,755,631.85
  5. Step 5: Solve for x
    x = 245,815,755,631.85/554,016.34
  6. Step 6: Final answer
    x = 443,697.66

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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.