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Finding the Fourth Proportional to 702,692.45, 969,715.91 and 380,402.55

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Solution

The fourth proportional to 702,692.45, 969,715.91 and 380,402.55 is: 524,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,692.45 : 969,715.91 = 380,402.55 : x
  2. Step 2: Convert to fraction form
    702,692.45/969,715.91 = 380,402.55/x
  3. Step 3: Cross multiply
    702,692.45x = 969,715.91 × 380,402.55
  4. Step 4: Simplify right side
    702,692.45x = 368,882,398,188.98
  5. Step 5: Solve for x
    x = 368,882,398,188.98/702,692.45
  6. Step 6: Final answer
    x = 524,955.69

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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.