Home / 1,339,810.80-2,009,975.40-393,212.40

Finding the Fourth Proportional to 1,339,810.80, 2,009,975.40 and 393,212.40

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Solution

The fourth proportional to 1,339,810.80, 2,009,975.40 and 393,212.40 is: 589,894.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,810.80 : 2,009,975.40 = 393,212.40 : x
  2. Step 2: Convert to fraction form
    1,339,810.80/2,009,975.40 = 393,212.40/x
  3. Step 3: Cross multiply
    1,339,810.80x = 2,009,975.40 × 393,212.40
  4. Step 4: Simplify right side
    1,339,810.80x = 790,347,250,974.96
  5. Step 5: Solve for x
    x = 790,347,250,974.96/1,339,810.80
  6. Step 6: Final answer
    x = 589,894.67

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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.