Home / 905,611.08-1,249,716.87-518,413.67

Finding the Fourth Proportional to 905,611.08, 1,249,716.87 and 518,413.67

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Solution

The fourth proportional to 905,611.08, 1,249,716.87 and 518,413.67 is: 715,395.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,611.08 : 1,249,716.87 = 518,413.67 : x
  2. Step 2: Convert to fraction form
    905,611.08/1,249,716.87 = 518,413.67/x
  3. Step 3: Cross multiply
    905,611.08x = 1,249,716.87 × 518,413.67
  4. Step 4: Simplify right side
    905,611.08x = 647,870,302,789.03
  5. Step 5: Solve for x
    x = 647,870,302,789.03/905,611.08
  6. Step 6: Final answer
    x = 715,395.73

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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.