Home / 639,821.01-883,313.37-443,870.60

Finding the Fourth Proportional to 639,821.01, 883,313.37 and 443,870.60

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Solution

The fourth proportional to 639,821.01, 883,313.37 and 443,870.60 is: 612,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,821.01 : 883,313.37 = 443,870.60 : x
  2. Step 2: Convert to fraction form
    639,821.01/883,313.37 = 443,870.60/x
  3. Step 3: Cross multiply
    639,821.01x = 883,313.37 × 443,870.60
  4. Step 4: Simplify right side
    639,821.01x = 392,076,833,310.57
  5. Step 5: Solve for x
    x = 392,076,833,310.57/639,821.01
  6. Step 6: Final answer
    x = 612,791.43

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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.