Home / 1,433,619.10-1,978,394.49-780,247.54

Finding the Fourth Proportional to 1,433,619.10, 1,978,394.49 and 780,247.54

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Solution

The fourth proportional to 1,433,619.10, 1,978,394.49 and 780,247.54 is: 1,076,741.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,619.10 : 1,978,394.49 = 780,247.54 : x
  2. Step 2: Convert to fraction form
    1,433,619.10/1,978,394.49 = 780,247.54/x
  3. Step 3: Cross multiply
    1,433,619.10x = 1,978,394.49 × 780,247.54
  4. Step 4: Simplify right side
    1,433,619.10x = 1,543,637,433,972.05
  5. Step 5: Solve for x
    x = 1,543,637,433,972.05/1,433,619.10
  6. Step 6: Final answer
    x = 1,076,741.68

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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.