Home / 1,392,675.89-2,089,013.85-919,250.51

Finding the Fourth Proportional to 1,392,675.89, 2,089,013.85 and 919,250.51

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Solution

The fourth proportional to 1,392,675.89, 2,089,013.85 and 919,250.51 is: 1,378,875.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,675.89 : 2,089,013.85 = 919,250.51 : x
  2. Step 2: Convert to fraction form
    1,392,675.89/2,089,013.85 = 919,250.51/x
  3. Step 3: Cross multiply
    1,392,675.89x = 2,089,013.85 × 919,250.51
  4. Step 4: Simplify right side
    1,392,675.89x = 1,920,327,047,009.56
  5. Step 5: Solve for x
    x = 1,920,327,047,009.56/1,392,675.89
  6. Step 6: Final answer
    x = 1,378,875.77

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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.