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Finding the Fourth Proportional to 539,215.94, 744,205.23 and 321,451.34

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Solution

The fourth proportional to 539,215.94, 744,205.23 and 321,451.34 is: 443,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,215.94 : 744,205.23 = 321,451.34 : x
  2. Step 2: Convert to fraction form
    539,215.94/744,205.23 = 321,451.34/x
  3. Step 3: Cross multiply
    539,215.94x = 744,205.23 × 321,451.34
  4. Step 4: Simplify right side
    539,215.94x = 239,225,764,697.48
  5. Step 5: Solve for x
    x = 239,225,764,697.48/539,215.94
  6. Step 6: Final answer
    x = 443,654.85

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1.5x scale

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.