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Finding the Fourth Proportional to 704,131.89, 971,692.81 and 381,840.28

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Solution

The fourth proportional to 704,131.89, 971,692.81 and 381,840.28 is: 526,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,131.89 : 971,692.81 = 381,840.28 : x
  2. Step 2: Convert to fraction form
    704,131.89/971,692.81 = 381,840.28/x
  3. Step 3: Cross multiply
    704,131.89x = 971,692.81 × 381,840.28
  4. Step 4: Simplify right side
    704,131.89x = 371,031,451,260.55
  5. Step 5: Solve for x
    x = 371,031,451,260.55/704,131.89
  6. Step 6: Final answer
    x = 526,934.60

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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.