Home / 998,047.35-1,375,871.30-711,069.21

Finding the Fourth Proportional to 998,047.35, 1,375,871.30 and 711,069.21

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Solution

The fourth proportional to 998,047.35, 1,375,871.30 and 711,069.21 is: 980,253.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,047.35 : 1,375,871.30 = 711,069.21 : x
  2. Step 2: Convert to fraction form
    998,047.35/1,375,871.30 = 711,069.21/x
  3. Step 3: Cross multiply
    998,047.35x = 1,375,871.30 × 711,069.21
  4. Step 4: Simplify right side
    998,047.35x = 978,339,718,352.67
  5. Step 5: Solve for x
    x = 978,339,718,352.67/998,047.35
  6. Step 6: Final answer
    x = 980,253.81

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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.