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Finding the Fourth Proportional to 488,234.70, 673,774.74 and 278,678.37

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Solution

The fourth proportional to 488,234.70, 673,774.74 and 278,678.37 is: 384,582.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,234.70 : 673,774.74 = 278,678.37 : x
  2. Step 2: Convert to fraction form
    488,234.70/673,774.74 = 278,678.37/x
  3. Step 3: Cross multiply
    488,234.70x = 673,774.74 × 278,678.37
  4. Step 4: Simplify right side
    488,234.70x = 187,766,444,112.07
  5. Step 5: Solve for x
    x = 187,766,444,112.07/488,234.70
  6. Step 6: Final answer
    x = 384,582.34

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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.