Home / 1,434,134.91-1,979,031.04-789,429.18

Finding the Fourth Proportional to 1,434,134.91, 1,979,031.04 and 789,429.18

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Solution

The fourth proportional to 1,434,134.91, 1,979,031.04 and 789,429.18 is: 1,089,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,134.91 : 1,979,031.04 = 789,429.18 : x
  2. Step 2: Convert to fraction form
    1,434,134.91/1,979,031.04 = 789,429.18/x
  3. Step 3: Cross multiply
    1,434,134.91x = 1,979,031.04 × 789,429.18
  4. Step 4: Simplify right side
    1,434,134.91x = 1,562,304,851,101.75
  5. Step 5: Solve for x
    x = 1,562,304,851,101.75/1,434,134.91
  6. Step 6: Final answer
    x = 1,089,370.91

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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.