Home / 621,066.60-930,935.49-321,245.34

Finding the Fourth Proportional to 621,066.60, 930,935.49 and 321,245.34

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Solution

The fourth proportional to 621,066.60, 930,935.49 and 321,245.34 is: 481,524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,066.60 : 930,935.49 = 321,245.34 : x
  2. Step 2: Convert to fraction form
    621,066.60/930,935.49 = 321,245.34/x
  3. Step 3: Cross multiply
    621,066.60x = 930,935.49 × 321,245.34
  4. Step 4: Simplify right side
    621,066.60x = 299,058,688,003.12
  5. Step 5: Solve for x
    x = 299,058,688,003.12/621,066.60
  6. Step 6: Final answer
    x = 481,524.35

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Double scale
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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.