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Finding the Fourth Proportional to 702,680.78, 969,692.90 and 380,382.60

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Solution

The fourth proportional to 702,680.78, 969,692.90 and 380,382.60 is: 524,924.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,680.78 : 969,692.90 = 380,382.60 : x
  2. Step 2: Convert to fraction form
    702,680.78/969,692.90 = 380,382.60/x
  3. Step 3: Cross multiply
    702,680.78x = 969,692.90 × 380,382.60
  4. Step 4: Simplify right side
    702,680.78x = 368,854,306,503.54
  5. Step 5: Solve for x
    x = 368,854,306,503.54/702,680.78
  6. Step 6: Final answer
    x = 524,924.43

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1.5x scale

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.