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Finding the Fourth Proportional to 1,401,258.93, 1,933,743.24 and 789,419.01

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Solution

The fourth proportional to 1,401,258.93, 1,933,743.24 and 789,419.01 is: 1,089,401.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401,258.93 : 1,933,743.24 = 789,419.01 : x
  2. Step 2: Convert to fraction form
    1,401,258.93/1,933,743.24 = 789,419.01/x
  3. Step 3: Cross multiply
    1,401,258.93x = 1,933,743.24 × 789,419.01
  4. Step 4: Simplify right side
    1,401,258.93x = 1,526,533,681,366.53
  5. Step 5: Solve for x
    x = 1,526,533,681,366.53/1,401,258.93
  6. Step 6: Final answer
    x = 1,089,401.58

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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.