Home / 727,760.40-1,091,640.60-489,814.80

Finding the Fourth Proportional to 727,760.40, 1,091,640.60 and 489,814.80

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Solution

The fourth proportional to 727,760.40, 1,091,640.60 and 489,814.80 is: 734,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,760.40 : 1,091,640.60 = 489,814.80 : x
  2. Step 2: Convert to fraction form
    727,760.40/1,091,640.60 = 489,814.80/x
  3. Step 3: Cross multiply
    727,760.40x = 1,091,640.60 × 489,814.80
  4. Step 4: Simplify right side
    727,760.40x = 534,701,722,160.88
  5. Step 5: Solve for x
    x = 534,701,722,160.88/727,760.40
  6. Step 6: Final answer
    x = 734,722.20

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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.