Home / 490,684.77-677,026.76-286,619.85

Finding the Fourth Proportional to 490,684.77, 677,026.76 and 286,619.85

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Solution

The fourth proportional to 490,684.77, 677,026.76 and 286,619.85 is: 395,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,684.77 : 677,026.76 = 286,619.85 : x
  2. Step 2: Convert to fraction form
    490,684.77/677,026.76 = 286,619.85/x
  3. Step 3: Cross multiply
    490,684.77x = 677,026.76 × 286,619.85
  4. Step 4: Simplify right side
    490,684.77x = 194,049,306,964.09
  5. Step 5: Solve for x
    x = 194,049,306,964.09/490,684.77
  6. Step 6: Final answer
    x = 395,466.33

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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.