Home / 1,638,999.86-2,256,672.94-1,393,501.82

Finding the Fourth Proportional to 1,638,999.86, 2,256,672.94 and 1,393,501.82

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Solution

The fourth proportional to 1,638,999.86, 2,256,672.94 and 1,393,501.82 is: 1,918,656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,999.86 : 2,256,672.94 = 1,393,501.82 : x
  2. Step 2: Convert to fraction form
    1,638,999.86/2,256,672.94 = 1,393,501.82/x
  3. Step 3: Cross multiply
    1,638,999.86x = 2,256,672.94 × 1,393,501.82
  4. Step 4: Simplify right side
    1,638,999.86x = 3,144,677,851,192.68
  5. Step 5: Solve for x
    x = 3,144,677,851,192.68/1,638,999.86
  6. Step 6: Final answer
    x = 1,918,656.57

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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.