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Finding the Fourth Proportional to 539,621.21, 744,673.56 and 297,903.75

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Solution

The fourth proportional to 539,621.21, 744,673.56 and 297,903.75 is: 411,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,621.21 : 744,673.56 = 297,903.75 : x
  2. Step 2: Convert to fraction form
    539,621.21/744,673.56 = 297,903.75/x
  3. Step 3: Cross multiply
    539,621.21x = 744,673.56 × 297,903.75
  4. Step 4: Simplify right side
    539,621.21x = 221,841,046,049.85
  5. Step 5: Solve for x
    x = 221,841,046,049.85/539,621.21
  6. Step 6: Final answer
    x = 411,105.13

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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.