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Finding the Fourth Proportional to 539,720.66, 744,815.67 and 298,003.70

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Solution

The fourth proportional to 539,720.66, 744,815.67 and 298,003.70 is: 411,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,720.66 : 744,815.67 = 298,003.70 : x
  2. Step 2: Convert to fraction form
    539,720.66/744,815.67 = 298,003.70/x
  3. Step 3: Cross multiply
    539,720.66x = 744,815.67 × 298,003.70
  4. Step 4: Simplify right side
    539,720.66x = 221,957,825,477.98
  5. Step 5: Solve for x
    x = 221,957,825,477.98/539,720.66
  6. Step 6: Final answer
    x = 411,245.75

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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.