Home / 775,754.12-1,070,845.62-489,217.16

Finding the Fourth Proportional to 775,754.12, 1,070,845.62 and 489,217.16

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Solution

The fourth proportional to 775,754.12, 1,070,845.62 and 489,217.16 is: 675,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,754.12 : 1,070,845.62 = 489,217.16 : x
  2. Step 2: Convert to fraction form
    775,754.12/1,070,845.62 = 489,217.16/x
  3. Step 3: Cross multiply
    775,754.12x = 1,070,845.62 × 489,217.16
  4. Step 4: Simplify right side
    775,754.12x = 523,876,053,014.84
  5. Step 5: Solve for x
    x = 523,876,053,014.84/775,754.12
  6. Step 6: Final answer
    x = 675,311.98

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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.