Home / 1,434,134.53-1,979,030.53-789,428.80

Finding the Fourth Proportional to 1,434,134.53, 1,979,030.53 and 789,428.80

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Solution

The fourth proportional to 1,434,134.53, 1,979,030.53 and 789,428.80 is: 1,089,370.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,134.53 : 1,979,030.53 = 789,428.80 : x
  2. Step 2: Convert to fraction form
    1,434,134.53/1,979,030.53 = 789,428.80/x
  3. Step 3: Cross multiply
    1,434,134.53x = 1,979,030.53 × 789,428.80
  4. Step 4: Simplify right side
    1,434,134.53x = 1,562,303,694,487.69
  5. Step 5: Solve for x
    x = 1,562,303,694,487.69/1,434,134.53
  6. Step 6: Final answer
    x = 1,089,370.39

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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.