Home / 1,392,673.89-2,089,010.85-919,248.51

Finding the Fourth Proportional to 1,392,673.89, 2,089,010.85 and 919,248.51

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Solution

The fourth proportional to 1,392,673.89, 2,089,010.85 and 919,248.51 is: 1,378,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,673.89 : 2,089,010.85 = 919,248.51 : x
  2. Step 2: Convert to fraction form
    1,392,673.89/2,089,010.85 = 919,248.51/x
  3. Step 3: Cross multiply
    1,392,673.89x = 2,089,010.85 × 919,248.51
  4. Step 4: Simplify right side
    1,392,673.89x = 1,920,320,111,236.33
  5. Step 5: Solve for x
    x = 1,920,320,111,236.33/1,392,673.89
  6. Step 6: Final answer
    x = 1,378,872.77

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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.