Home / 727,106.56-1,003,147.30-421,015.84

Finding the Fourth Proportional to 727,106.56, 1,003,147.30 and 421,015.84

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Solution

The fourth proportional to 727,106.56, 1,003,147.30 and 421,015.84 is: 580,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,106.56 : 1,003,147.30 = 421,015.84 : x
  2. Step 2: Convert to fraction form
    727,106.56/1,003,147.30 = 421,015.84/x
  3. Step 3: Cross multiply
    727,106.56x = 1,003,147.30 × 421,015.84
  4. Step 4: Simplify right side
    727,106.56x = 422,340,903,153.23
  5. Step 5: Solve for x
    x = 422,340,903,153.23/727,106.56
  6. Step 6: Final answer
    x = 580,851.45

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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.