Home / 1,280,412.72-1,922,616.60-1,223,623.68

Finding the Fourth Proportional to 1,280,412.72, 1,922,616.60 and 1,223,623.68

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Solution

The fourth proportional to 1,280,412.72, 1,922,616.60 and 1,223,623.68 is: 1,837,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,412.72 : 1,922,616.60 = 1,223,623.68 : x
  2. Step 2: Convert to fraction form
    1,280,412.72/1,922,616.60 = 1,223,623.68/x
  3. Step 3: Cross multiply
    1,280,412.72x = 1,922,616.60 × 1,223,623.68
  4. Step 4: Simplify right side
    1,280,412.72x = 2,352,559,199,321.09
  5. Step 5: Solve for x
    x = 2,352,559,199,321.09/1,280,412.72
  6. Step 6: Final answer
    x = 1,837,344.45

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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.