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Finding the Fourth Proportional to 539,640.72, 744,704.40 and 297,923.52

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Solution

The fourth proportional to 539,640.72, 744,704.40 and 297,923.52 is: 411,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,640.72 : 744,704.40 = 297,923.52 : x
  2. Step 2: Convert to fraction form
    539,640.72/744,704.40 = 297,923.52/x
  3. Step 3: Cross multiply
    539,640.72x = 744,704.40 × 297,923.52
  4. Step 4: Simplify right side
    539,640.72x = 221,864,956,207.49
  5. Step 5: Solve for x
    x = 221,864,956,207.49/539,640.72
  6. Step 6: Final answer
    x = 411,134.57

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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.