Home / 1,443,016.30-1,991,331.81-789,639.72

Finding the Fourth Proportional to 1,443,016.30, 1,991,331.81 and 789,639.72

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Solution

The fourth proportional to 1,443,016.30, 1,991,331.81 and 789,639.72 is: 1,089,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,016.30 : 1,991,331.81 = 789,639.72 : x
  2. Step 2: Convert to fraction form
    1,443,016.30/1,991,331.81 = 789,639.72/x
  3. Step 3: Cross multiply
    1,443,016.30x = 1,991,331.81 × 789,639.72
  4. Step 4: Simplify right side
    1,443,016.30x = 1,572,434,689,077.43
  5. Step 5: Solve for x
    x = 1,572,434,689,077.43/1,443,016.30
  6. Step 6: Final answer
    x = 1,089,686.02

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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.