Home / 1,323,323.20-1,986,021.60-613,439.20

Finding the Fourth Proportional to 1,323,323.20, 1,986,021.60 and 613,439.20

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Solution

The fourth proportional to 1,323,323.20, 1,986,021.60 and 613,439.20 is: 920,639.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323,323.20 : 1,986,021.60 = 613,439.20 : x
  2. Step 2: Convert to fraction form
    1,323,323.20/1,986,021.60 = 613,439.20/x
  3. Step 3: Cross multiply
    1,323,323.20x = 1,986,021.60 × 613,439.20
  4. Step 4: Simplify right side
    1,323,323.20x = 1,218,303,501,486.72
  5. Step 5: Solve for x
    x = 1,218,303,501,486.72/1,323,323.20
  6. Step 6: Final answer
    x = 920,639.42

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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.