Home / 1,391,129.45-1,929,580.31-1,354,256.63

Finding the Fourth Proportional to 1,391,129.45, 1,929,580.31 and 1,354,256.63

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Solution

The fourth proportional to 1,391,129.45, 1,929,580.31 and 1,354,256.63 is: 1,878,435.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,129.45 : 1,929,580.31 = 1,354,256.63 : x
  2. Step 2: Convert to fraction form
    1,391,129.45/1,929,580.31 = 1,354,256.63/x
  3. Step 3: Cross multiply
    1,391,129.45x = 1,929,580.31 × 1,354,256.63
  4. Step 4: Simplify right side
    1,391,129.45x = 2,613,146,936,144.55
  5. Step 5: Solve for x
    x = 2,613,146,936,144.55/1,391,129.45
  6. Step 6: Final answer
    x = 1,878,435.49

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.