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Finding the Fourth Proportional to 539,069.45, 743,921.03 and 297,362.21

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Solution

The fourth proportional to 539,069.45, 743,921.03 and 297,362.21 is: 410,362.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,069.45 : 743,921.03 = 297,362.21 : x
  2. Step 2: Convert to fraction form
    539,069.45/743,921.03 = 297,362.21/x
  3. Step 3: Cross multiply
    539,069.45x = 743,921.03 × 297,362.21
  4. Step 4: Simplify right side
    539,069.45x = 221,214,001,546.28
  5. Step 5: Solve for x
    x = 221,214,001,546.28/539,069.45
  6. Step 6: Final answer
    x = 410,362.71

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Double scale
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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.