Home / 679,317.76-1,018,986.36-258,616.72

Finding the Fourth Proportional to 679,317.76, 1,018,986.36 and 258,616.72

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Solution

The fourth proportional to 679,317.76, 1,018,986.36 and 258,616.72 is: 387,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,317.76 : 1,018,986.36 = 258,616.72 : x
  2. Step 2: Convert to fraction form
    679,317.76/1,018,986.36 = 258,616.72/x
  3. Step 3: Cross multiply
    679,317.76x = 1,018,986.36 × 258,616.72
  4. Step 4: Simplify right side
    679,317.76x = 263,526,910,147.94
  5. Step 5: Solve for x
    x = 263,526,910,147.94/679,317.76
  6. Step 6: Final answer
    x = 387,928.78

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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.