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Finding the Fourth Proportional to 852,768.54, 1,278,705.69 and 425,846.70

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Solution

The fourth proportional to 852,768.54, 1,278,705.69 and 425,846.70 is: 638,546.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,768.54 : 1,278,705.69 = 425,846.70 : x
  2. Step 2: Convert to fraction form
    852,768.54/1,278,705.69 = 425,846.70/x
  3. Step 3: Cross multiply
    852,768.54x = 1,278,705.69 × 425,846.70
  4. Step 4: Simplify right side
    852,768.54x = 544,532,598,357.72
  5. Step 5: Solve for x
    x = 544,532,598,357.72/852,768.54
  6. Step 6: Final answer
    x = 638,546.77

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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.