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Finding the Fourth Proportional to 5,987,999.70, 8,981,999.55 and 1,728,306.90

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Solution

The fourth proportional to 5,987,999.70, 8,981,999.55 and 1,728,306.90 is: 2,592,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,987,999.70 : 8,981,999.55 = 1,728,306.90 : x
  2. Step 2: Convert to fraction form
    5,987,999.70/8,981,999.55 = 1,728,306.90/x
  3. Step 3: Cross multiply
    5,987,999.70x = 8,981,999.55 × 1,728,306.90
  4. Step 4: Simplify right side
    5,987,999.70x = 15,523,651,798,061.89
  5. Step 5: Solve for x
    x = 15,523,651,798,061.89/5,987,999.70
  6. Step 6: Final answer
    x = 2,592,460.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.