Home / 860,432.22-1,290,665.34-313,305.57

Finding the Fourth Proportional to 860,432.22, 1,290,665.34 and 313,305.57

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Solution

The fourth proportional to 860,432.22, 1,290,665.34 and 313,305.57 is: 469,964.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,432.22 : 1,290,665.34 = 313,305.57 : x
  2. Step 2: Convert to fraction form
    860,432.22/1,290,665.34 = 313,305.57/x
  3. Step 3: Cross multiply
    860,432.22x = 1,290,665.34 × 313,305.57
  4. Step 4: Simplify right side
    860,432.22x = 404,372,640,027.94
  5. Step 5: Solve for x
    x = 404,372,640,027.94/860,432.22
  6. Step 6: Final answer
    x = 469,964.55

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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.