Home / 490,686.77-677,029.51-286,621.85

Finding the Fourth Proportional to 490,686.77, 677,029.51 and 286,621.85

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Solution

The fourth proportional to 490,686.77, 677,029.51 and 286,621.85 is: 395,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,686.77 : 677,029.51 = 286,621.85 : x
  2. Step 2: Convert to fraction form
    490,686.77/677,029.51 = 286,621.85/x
  3. Step 3: Cross multiply
    490,686.77x = 677,029.51 × 286,621.85
  4. Step 4: Simplify right side
    490,686.77x = 194,051,450,660.79
  5. Step 5: Solve for x
    x = 194,051,450,660.79/490,686.77
  6. Step 6: Final answer
    x = 395,469.09

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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.