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Finding the Fourth Proportional to 485,556.06, 670,102.83 and 281,676.63

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Solution

The fourth proportional to 485,556.06, 670,102.83 and 281,676.63 is: 388,734.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,556.06 : 670,102.83 = 281,676.63 : x
  2. Step 2: Convert to fraction form
    485,556.06/670,102.83 = 281,676.63/x
  3. Step 3: Cross multiply
    485,556.06x = 670,102.83 × 281,676.63
  4. Step 4: Simplify right side
    485,556.06x = 188,752,306,907.86
  5. Step 5: Solve for x
    x = 188,752,306,907.86/485,556.06
  6. Step 6: Final answer
    x = 388,734.32

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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.