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Finding the Fourth Proportional to 611,818.55, 917,745.94 and 292,004.12

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Solution

The fourth proportional to 611,818.55, 917,745.94 and 292,004.12 is: 438,014.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,818.55 : 917,745.94 = 292,004.12 : x
  2. Step 2: Convert to fraction form
    611,818.55/917,745.94 = 292,004.12/x
  3. Step 3: Cross multiply
    611,818.55x = 917,745.94 × 292,004.12
  4. Step 4: Simplify right side
    611,818.55x = 267,985,597,157.63
  5. Step 5: Solve for x
    x = 267,985,597,157.63/611,818.55
  6. Step 6: Final answer
    x = 438,014.83

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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.