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Finding the Fourth Proportional to 660,142.48, 988,508.33 and 455,608.26

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Solution

The fourth proportional to 660,142.48, 988,508.33 and 455,608.26 is: 682,235.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,142.48 : 988,508.33 = 455,608.26 : x
  2. Step 2: Convert to fraction form
    660,142.48/988,508.33 = 455,608.26/x
  3. Step 3: Cross multiply
    660,142.48x = 988,508.33 × 455,608.26
  4. Step 4: Simplify right side
    660,142.48x = 450,372,555,284.26
  5. Step 5: Solve for x
    x = 450,372,555,284.26/660,142.48
  6. Step 6: Final answer
    x = 682,235.38

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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.