Home / 758,131.54-1,045,782.94-489,859.54

Finding the Fourth Proportional to 758,131.54, 1,045,782.94 and 489,859.54

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Solution

The fourth proportional to 758,131.54, 1,045,782.94 and 489,859.54 is: 675,722.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,131.54 : 1,045,782.94 = 489,859.54 : x
  2. Step 2: Convert to fraction form
    758,131.54/1,045,782.94 = 489,859.54/x
  3. Step 3: Cross multiply
    758,131.54x = 1,045,782.94 × 489,859.54
  4. Step 4: Simplify right side
    758,131.54x = 512,286,749,928.25
  5. Step 5: Solve for x
    x = 512,286,749,928.25/758,131.54
  6. Step 6: Final answer
    x = 675,722.78

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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.