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Finding the Fourth Proportional to 551,093.57, 760,467.12 and 309,329.43

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Solution

The fourth proportional to 551,093.57, 760,467.12 and 309,329.43 is: 426,851.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,093.57 : 760,467.12 = 309,329.43 : x
  2. Step 2: Convert to fraction form
    551,093.57/760,467.12 = 309,329.43/x
  3. Step 3: Cross multiply
    551,093.57x = 760,467.12 × 309,329.43
  4. Step 4: Simplify right side
    551,093.57x = 235,234,860,763.34
  5. Step 5: Solve for x
    x = 235,234,860,763.34/551,093.57
  6. Step 6: Final answer
    x = 426,851.04

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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.