Home / 860,219.42-1,290,591.59-439,790.54

Finding the Fourth Proportional to 860,219.42, 1,290,591.59 and 439,790.54

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Solution

The fourth proportional to 860,219.42, 1,290,591.59 and 439,790.54 is: 659,819.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,219.42 : 1,290,591.59 = 439,790.54 : x
  2. Step 2: Convert to fraction form
    860,219.42/1,290,591.59 = 439,790.54/x
  3. Step 3: Cross multiply
    860,219.42x = 1,290,591.59 × 439,790.54
  4. Step 4: Simplify right side
    860,219.42x = 567,589,963,633.65
  5. Step 5: Solve for x
    x = 567,589,963,633.65/860,219.42
  6. Step 6: Final answer
    x = 659,819.99

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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.