Home / 1,381,190.20-1,906,336.50-928,218.76

Finding the Fourth Proportional to 1,381,190.20, 1,906,336.50 and 928,218.76

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Solution

The fourth proportional to 1,381,190.20, 1,906,336.50 and 928,218.76 is: 1,281,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,190.20 : 1,906,336.50 = 928,218.76 : x
  2. Step 2: Convert to fraction form
    1,381,190.20/1,906,336.50 = 928,218.76/x
  3. Step 3: Cross multiply
    1,381,190.20x = 1,906,336.50 × 928,218.76
  4. Step 4: Simplify right side
    1,381,190.20x = 1,769,497,302,172.74
  5. Step 5: Solve for x
    x = 1,769,497,302,172.74/1,381,190.20
  6. Step 6: Final answer
    x = 1,281,139.49

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Double scale
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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.