Home / 621,680.20-931,829.10-266,633.80

Finding the Fourth Proportional to 621,680.20, 931,829.10 and 266,633.80

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Solution

The fourth proportional to 621,680.20, 931,829.10 and 266,633.80 is: 399,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,680.20 : 931,829.10 = 266,633.80 : x
  2. Step 2: Convert to fraction form
    621,680.20/931,829.10 = 266,633.80/x
  3. Step 3: Cross multiply
    621,680.20x = 931,829.10 × 266,633.80
  4. Step 4: Simplify right side
    621,680.20x = 248,457,133,883.58
  5. Step 5: Solve for x
    x = 248,457,133,883.58/621,680.20
  6. Step 6: Final answer
    x = 399,654.25

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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.