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Finding the Fourth Proportional to 978,755.21, 1,467,658.17 and 574,079.66

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Solution

The fourth proportional to 978,755.21, 1,467,658.17 and 574,079.66 is: 860,841.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,755.21 : 1,467,658.17 = 574,079.66 : x
  2. Step 2: Convert to fraction form
    978,755.21/1,467,658.17 = 574,079.66/x
  3. Step 3: Cross multiply
    978,755.21x = 1,467,658.17 × 574,079.66
  4. Step 4: Simplify right side
    978,755.21x = 842,552,695,891.53
  5. Step 5: Solve for x
    x = 842,552,695,891.53/978,755.21
  6. Step 6: Final answer
    x = 860,841.08

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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.