Home / 1,434,134.67-1,979,030.70-789,428.94

Finding the Fourth Proportional to 1,434,134.67, 1,979,030.70 and 789,428.94

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Solution

The fourth proportional to 1,434,134.67, 1,979,030.70 and 789,428.94 is: 1,089,370.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,134.67 : 1,979,030.70 = 789,428.94 : x
  2. Step 2: Convert to fraction form
    1,434,134.67/1,979,030.70 = 789,428.94/x
  3. Step 3: Cross multiply
    1,434,134.67x = 1,979,030.70 × 789,428.94
  4. Step 4: Simplify right side
    1,434,134.67x = 1,562,304,107,728.46
  5. Step 5: Solve for x
    x = 1,562,304,107,728.46/1,434,134.67
  6. Step 6: Final answer
    x = 1,089,370.57

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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.