Home / 1,151,853.21-1,589,447.21-642,588.39

Finding the Fourth Proportional to 1,151,853.21, 1,589,447.21 and 642,588.39

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Solution

The fourth proportional to 1,151,853.21, 1,589,447.21 and 642,588.39 is: 886,710.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151,853.21 : 1,589,447.21 = 642,588.39 : x
  2. Step 2: Convert to fraction form
    1,151,853.21/1,589,447.21 = 642,588.39/x
  3. Step 3: Cross multiply
    1,151,853.21x = 1,589,447.21 × 642,588.39
  4. Step 4: Simplify right side
    1,151,853.21x = 1,021,360,320,450.95
  5. Step 5: Solve for x
    x = 1,021,360,320,450.95/1,151,853.21
  6. Step 6: Final answer
    x = 886,710.49

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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.