Home / 1,380,514.82-1,905,188.86-829,399.10

Finding the Fourth Proportional to 1,380,514.82, 1,905,188.86 and 829,399.10

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Solution

The fourth proportional to 1,380,514.82, 1,905,188.86 and 829,399.10 is: 1,144,617.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,514.82 : 1,905,188.86 = 829,399.10 : x
  2. Step 2: Convert to fraction form
    1,380,514.82/1,905,188.86 = 829,399.10/x
  3. Step 3: Cross multiply
    1,380,514.82x = 1,905,188.86 × 829,399.10
  4. Step 4: Simplify right side
    1,380,514.82x = 1,580,161,925,814.03
  5. Step 5: Solve for x
    x = 1,580,161,925,814.03/1,380,514.82
  6. Step 6: Final answer
    x = 1,144,617.86

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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.