Home / 711,837.66-982,184.06-421,540.41

Finding the Fourth Proportional to 711,837.66, 982,184.06 and 421,540.41

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Solution

The fourth proportional to 711,837.66, 982,184.06 and 421,540.41 is: 581,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,837.66 : 982,184.06 = 421,540.41 : x
  2. Step 2: Convert to fraction form
    711,837.66/982,184.06 = 421,540.41/x
  3. Step 3: Cross multiply
    711,837.66x = 982,184.06 × 421,540.41
  4. Step 4: Simplify right side
    711,837.66x = 414,030,271,347.87
  5. Step 5: Solve for x
    x = 414,030,271,347.87/711,837.66
  6. Step 6: Final answer
    x = 581,635.81

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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.