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Finding the Fourth Proportional to 851,113, 1,276,337.34 and 371,487.49

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Solution

The fourth proportional to 851,113, 1,276,337.34 and 371,487.49 is: 557,086.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,113 : 1,276,337.34 = 371,487.49 : x
  2. Step 2: Convert to fraction form
    851,113/1,276,337.34 = 371,487.49/x
  3. Step 3: Cross multiply
    851,113x = 1,276,337.34 × 371,487.49
  4. Step 4: Simplify right side
    851,113x = 474,143,354,829.88
  5. Step 5: Solve for x
    x = 474,143,354,829.88/851,113
  6. Step 6: Final answer
    x = 557,086.26

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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.