Home / 1,221,405.55-1,686,413.22-814,466.81

Finding the Fourth Proportional to 1,221,405.55, 1,686,413.22 and 814,466.81

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Solution

The fourth proportional to 1,221,405.55, 1,686,413.22 and 814,466.81 is: 1,124,546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,405.55 : 1,686,413.22 = 814,466.81 : x
  2. Step 2: Convert to fraction form
    1,221,405.55/1,686,413.22 = 814,466.81/x
  3. Step 3: Cross multiply
    1,221,405.55x = 1,686,413.22 × 814,466.81
  4. Step 4: Simplify right side
    1,221,405.55x = 1,373,527,596,797.01
  5. Step 5: Solve for x
    x = 1,373,527,596,797.01/1,221,405.55
  6. Step 6: Final answer
    x = 1,124,546.72

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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.