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Finding the Fourth Proportional to 645,869.80, 968,459.10 and 271,469.80

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Solution

The fourth proportional to 645,869.80, 968,459.10 and 271,469.80 is: 407,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,869.80 : 968,459.10 = 271,469.80 : x
  2. Step 2: Convert to fraction form
    645,869.80/968,459.10 = 271,469.80/x
  3. Step 3: Cross multiply
    645,869.80x = 968,459.10 × 271,469.80
  4. Step 4: Simplify right side
    645,869.80x = 262,907,398,185.18
  5. Step 5: Solve for x
    x = 262,907,398,185.18/645,869.80
  6. Step 6: Final answer
    x = 407,059.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.