Home / 679,161.37-1,018,775.89-258,469.85

Finding the Fourth Proportional to 679,161.37, 1,018,775.89 and 258,469.85

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Solution

The fourth proportional to 679,161.37, 1,018,775.89 and 258,469.85 is: 387,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,161.37 : 1,018,775.89 = 258,469.85 : x
  2. Step 2: Convert to fraction form
    679,161.37/1,018,775.89 = 258,469.85/x
  3. Step 3: Cross multiply
    679,161.37x = 1,018,775.89 × 258,469.85
  4. Step 4: Simplify right side
    679,161.37x = 263,322,845,731.86
  5. Step 5: Solve for x
    x = 263,322,845,731.86/679,161.37
  6. Step 6: Final answer
    x = 387,717.65

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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.