Home / 1,321,040.95-1,978,197.51-870,395.58

Finding the Fourth Proportional to 1,321,040.95, 1,978,197.51 and 870,395.58

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Solution

The fourth proportional to 1,321,040.95, 1,978,197.51 and 870,395.58 is: 1,303,376.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,040.95 : 1,978,197.51 = 870,395.58 : x
  2. Step 2: Convert to fraction form
    1,321,040.95/1,978,197.51 = 870,395.58/x
  3. Step 3: Cross multiply
    1,321,040.95x = 1,978,197.51 × 870,395.58
  4. Step 4: Simplify right side
    1,321,040.95x = 1,721,814,369,071.01
  5. Step 5: Solve for x
    x = 1,721,814,369,071.01/1,321,040.95
  6. Step 6: Final answer
    x = 1,303,376.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.