Home / 920,171.96-1,269,706.64-512,217.16

Finding the Fourth Proportional to 920,171.96, 1,269,706.64 and 512,217.16

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Solution

The fourth proportional to 920,171.96, 1,269,706.64 and 512,217.16 is: 706,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,171.96 : 1,269,706.64 = 512,217.16 : x
  2. Step 2: Convert to fraction form
    920,171.96/1,269,706.64 = 512,217.16/x
  3. Step 3: Cross multiply
    920,171.96x = 1,269,706.64 × 512,217.16
  4. Step 4: Simplify right side
    920,171.96x = 650,365,529,173.94
  5. Step 5: Solve for x
    x = 650,365,529,173.94/920,171.96
  6. Step 6: Final answer
    x = 706,786.95

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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.