Home / 490,867.84-677,394.24-278,899.84

Finding the Fourth Proportional to 490,867.84, 677,394.24 and 278,899.84

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Solution

The fourth proportional to 490,867.84, 677,394.24 and 278,899.84 is: 384,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,867.84 : 677,394.24 = 278,899.84 : x
  2. Step 2: Convert to fraction form
    490,867.84/677,394.24 = 278,899.84/x
  3. Step 3: Cross multiply
    490,867.84x = 677,394.24 × 278,899.84
  4. Step 4: Simplify right side
    490,867.84x = 188,925,145,152.92
  5. Step 5: Solve for x
    x = 188,925,145,152.92/490,867.84
  6. Step 6: Final answer
    x = 384,879.86

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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.