Home / 990,738.81-1,485,639.81-383,811.39

Finding the Fourth Proportional to 990,738.81, 1,485,639.81 and 383,811.39

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Solution

The fourth proportional to 990,738.81, 1,485,639.81 and 383,811.39 is: 575,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,738.81 : 1,485,639.81 = 383,811.39 : x
  2. Step 2: Convert to fraction form
    990,738.81/1,485,639.81 = 383,811.39/x
  3. Step 3: Cross multiply
    990,738.81x = 1,485,639.81 × 383,811.39
  4. Step 4: Simplify right side
    990,738.81x = 570,205,480,515.44
  5. Step 5: Solve for x
    x = 570,205,480,515.44/990,738.81
  6. Step 6: Final answer
    x = 575,535.63

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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.