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Finding the Fourth Proportional to 623,377.44, 860,261 and 355,105.44

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Solution

The fourth proportional to 623,377.44, 860,261 and 355,105.44 is: 490,045.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,377.44 : 860,261 = 355,105.44 : x
  2. Step 2: Convert to fraction form
    623,377.44/860,261 = 355,105.44/x
  3. Step 3: Cross multiply
    623,377.44x = 860,261 × 355,105.44
  4. Step 4: Simplify right side
    623,377.44x = 305,483,360,919.84
  5. Step 5: Solve for x
    x = 305,483,360,919.84/623,377.44
  6. Step 6: Final answer
    x = 490,045.58

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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.