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Finding the Fourth Proportional to 647,577, 893,656.26 and 379,305

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Solution

The fourth proportional to 647,577, 893,656.26 and 379,305 is: 523,440.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,577 : 893,656.26 = 379,305 : x
  2. Step 2: Convert to fraction form
    647,577/893,656.26 = 379,305/x
  3. Step 3: Cross multiply
    647,577x = 893,656.26 × 379,305
  4. Step 4: Simplify right side
    647,577x = 338,968,287,699.30
  5. Step 5: Solve for x
    x = 338,968,287,699.30/647,577
  6. Step 6: Final answer
    x = 523,440.90

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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.