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Finding the Fourth Proportional to 703,692.63, 971,091.99 and 381,399.30

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Solution

The fourth proportional to 703,692.63, 971,091.99 and 381,399.30 is: 526,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,692.63 : 971,091.99 = 381,399.30 : x
  2. Step 2: Convert to fraction form
    703,692.63/971,091.99 = 381,399.30/x
  3. Step 3: Cross multiply
    703,692.63x = 971,091.99 × 381,399.30
  4. Step 4: Simplify right side
    703,692.63x = 370,373,805,221.61
  5. Step 5: Solve for x
    x = 370,373,805,221.61/703,692.63
  6. Step 6: Final answer
    x = 526,328.95

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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.