Home / 687,435.58-1,031,076.96-214,081.30

Finding the Fourth Proportional to 687,435.58, 1,031,076.96 and 214,081.30

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Solution

The fourth proportional to 687,435.58, 1,031,076.96 and 214,081.30 is: 321,098.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,435.58 : 1,031,076.96 = 214,081.30 : x
  2. Step 2: Convert to fraction form
    687,435.58/1,031,076.96 = 214,081.30/x
  3. Step 3: Cross multiply
    687,435.58x = 1,031,076.96 × 214,081.30
  4. Step 4: Simplify right side
    687,435.58x = 220,734,295,996.85
  5. Step 5: Solve for x
    x = 220,734,295,996.85/687,435.58
  6. Step 6: Final answer
    x = 321,098.15

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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.