Home / 1,247,040.72-1,871,055.12-648,379.44

Finding the Fourth Proportional to 1,247,040.72, 1,871,055.12 and 648,379.44

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Solution

The fourth proportional to 1,247,040.72, 1,871,055.12 and 648,379.44 is: 972,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,040.72 : 1,871,055.12 = 648,379.44 : x
  2. Step 2: Convert to fraction form
    1,247,040.72/1,871,055.12 = 648,379.44/x
  3. Step 3: Cross multiply
    1,247,040.72x = 1,871,055.12 × 648,379.44
  4. Step 4: Simplify right side
    1,247,040.72x = 1,213,153,670,914.73
  5. Step 5: Solve for x
    x = 1,213,153,670,914.73/1,247,040.72
  6. Step 6: Final answer
    x = 972,826.03

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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.