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Finding the Fourth Proportional to 661,727.90, 989,967.45 and 573,956.30

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Solution

The fourth proportional to 661,727.90, 989,967.45 and 573,956.30 is: 858,658.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,727.90 : 989,967.45 = 573,956.30 : x
  2. Step 2: Convert to fraction form
    661,727.90/989,967.45 = 573,956.30/x
  3. Step 3: Cross multiply
    661,727.90x = 989,967.45 × 573,956.30
  4. Step 4: Simplify right side
    661,727.90x = 568,198,054,722.44
  5. Step 5: Solve for x
    x = 568,198,054,722.44/661,727.90
  6. Step 6: Final answer
    x = 858,658.15

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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.