Home / 727,111.56-1,003,154.20-421,020.84

Finding the Fourth Proportional to 727,111.56, 1,003,154.20 and 421,020.84

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Solution

The fourth proportional to 727,111.56, 1,003,154.20 and 421,020.84 is: 580,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,111.56 : 1,003,154.20 = 421,020.84 : x
  2. Step 2: Convert to fraction form
    727,111.56/1,003,154.20 = 421,020.84/x
  3. Step 3: Cross multiply
    727,111.56x = 1,003,154.20 × 421,020.84
  4. Step 4: Simplify right side
    727,111.56x = 422,348,823,933.53
  5. Step 5: Solve for x
    x = 422,348,823,933.53/727,111.56
  6. Step 6: Final answer
    x = 580,858.35

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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.