Home / 1,339,408.80-2,009,372.40-392,810.40

Finding the Fourth Proportional to 1,339,408.80, 2,009,372.40 and 392,810.40

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Solution

The fourth proportional to 1,339,408.80, 2,009,372.40 and 392,810.40 is: 589,291.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,408.80 : 2,009,372.40 = 392,810.40 : x
  2. Step 2: Convert to fraction form
    1,339,408.80/2,009,372.40 = 392,810.40/x
  3. Step 3: Cross multiply
    1,339,408.80x = 2,009,372.40 × 392,810.40
  4. Step 4: Simplify right side
    1,339,408.80x = 789,302,376,192.96
  5. Step 5: Solve for x
    x = 789,302,376,192.96/1,339,408.80
  6. Step 6: Final answer
    x = 589,291.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.