Home / 638,185.96-880,692.20-351,706.28

Finding the Fourth Proportional to 638,185.96, 880,692.20 and 351,706.28

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Solution

The fourth proportional to 638,185.96, 880,692.20 and 351,706.28 is: 485,352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,185.96 : 880,692.20 = 351,706.28 : x
  2. Step 2: Convert to fraction form
    638,185.96/880,692.20 = 351,706.28/x
  3. Step 3: Cross multiply
    638,185.96x = 880,692.20 × 351,706.28
  4. Step 4: Simplify right side
    638,185.96x = 309,744,977,487.02
  5. Step 5: Solve for x
    x = 309,744,977,487.02/638,185.96
  6. Step 6: Final answer
    x = 485,352.23

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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.