Home / 521,017.20-780,942.60-296,485.20

Finding the Fourth Proportional to 521,017.20, 780,942.60 and 296,485.20

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Solution

The fourth proportional to 521,017.20, 780,942.60 and 296,485.20 is: 444,395.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,017.20 : 780,942.60 = 296,485.20 : x
  2. Step 2: Convert to fraction form
    521,017.20/780,942.60 = 296,485.20/x
  3. Step 3: Cross multiply
    521,017.20x = 780,942.60 × 296,485.20
  4. Step 4: Simplify right side
    521,017.20x = 231,537,922,949.52
  5. Step 5: Solve for x
    x = 231,537,922,949.52/521,017.20
  6. Step 6: Final answer
    x = 444,395.93

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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.