Home / 635,946.15-877,388.65-394,140.50

Finding the Fourth Proportional to 635,946.15, 877,388.65 and 394,140.50

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Solution

The fourth proportional to 635,946.15, 877,388.65 and 394,140.50 is: 543,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,946.15 : 877,388.65 = 394,140.50 : x
  2. Step 2: Convert to fraction form
    635,946.15/877,388.65 = 394,140.50/x
  3. Step 3: Cross multiply
    635,946.15x = 877,388.65 × 394,140.50
  4. Step 4: Simplify right side
    635,946.15x = 345,814,395,833.03
  5. Step 5: Solve for x
    x = 345,814,395,833.03/635,946.15
  6. Step 6: Final answer
    x = 543,779.37

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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.