Home / 1,328,040.20-1,987,936.58-719,316.56

Finding the Fourth Proportional to 1,328,040.20, 1,987,936.58 and 719,316.56

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Solution

The fourth proportional to 1,328,040.20, 1,987,936.58 and 719,316.56 is: 1,076,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,040.20 : 1,987,936.58 = 719,316.56 : x
  2. Step 2: Convert to fraction form
    1,328,040.20/1,987,936.58 = 719,316.56/x
  3. Step 3: Cross multiply
    1,328,040.20x = 1,987,936.58 × 719,316.56
  4. Step 4: Simplify right side
    1,328,040.20x = 1,429,955,702,223.77
  5. Step 5: Solve for x
    x = 1,429,955,702,223.77/1,328,040.20
  6. Step 6: Final answer
    x = 1,076,741.28

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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.