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Finding the Fourth Proportional to 539,351.79, 744,291.75 and 297,631.20

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Solution

The fourth proportional to 539,351.79, 744,291.75 and 297,631.20 is: 410,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,351.79 : 744,291.75 = 297,631.20 : x
  2. Step 2: Convert to fraction form
    539,351.79/744,291.75 = 297,631.20/x
  3. Step 3: Cross multiply
    539,351.79x = 744,291.75 × 297,631.20
  4. Step 4: Simplify right side
    539,351.79x = 221,524,446,702.60
  5. Step 5: Solve for x
    x = 221,524,446,702.60/539,351.79
  6. Step 6: Final answer
    x = 410,723.48

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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.