Home / 720,455.75-1,080,524.39-208,009.57

Finding the Fourth Proportional to 720,455.75, 1,080,524.39 and 208,009.57

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Solution

The fourth proportional to 720,455.75, 1,080,524.39 and 208,009.57 is: 311,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,455.75 : 1,080,524.39 = 208,009.57 : x
  2. Step 2: Convert to fraction form
    720,455.75/1,080,524.39 = 208,009.57/x
  3. Step 3: Cross multiply
    720,455.75x = 1,080,524.39 × 208,009.57
  4. Step 4: Simplify right side
    720,455.75x = 224,759,413,738.41
  5. Step 5: Solve for x
    x = 224,759,413,738.41/720,455.75
  6. Step 6: Final answer
    x = 311,968.38

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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.