Home / 490,731.45-677,245.08-299,780.84

Finding the Fourth Proportional to 490,731.45, 677,245.08 and 299,780.84

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Solution

The fourth proportional to 490,731.45, 677,245.08 and 299,780.84 is: 413,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,731.45 : 677,245.08 = 299,780.84 : x
  2. Step 2: Convert to fraction form
    490,731.45/677,245.08 = 299,780.84/x
  3. Step 3: Cross multiply
    490,731.45x = 677,245.08 × 299,780.84
  4. Step 4: Simplify right side
    490,731.45x = 203,025,095,582.04
  5. Step 5: Solve for x
    x = 203,025,095,582.04/490,731.45
  6. Step 6: Final answer
    x = 413,719.35

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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.