Home / 456,012.80-682,982.40-288,051.20

Finding the Fourth Proportional to 456,012.80, 682,982.40 and 288,051.20

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Solution

The fourth proportional to 456,012.80, 682,982.40 and 288,051.20 is: 431,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,012.80 : 682,982.40 = 288,051.20 : x
  2. Step 2: Convert to fraction form
    456,012.80/682,982.40 = 288,051.20/x
  3. Step 3: Cross multiply
    456,012.80x = 682,982.40 × 288,051.20
  4. Step 4: Simplify right side
    456,012.80x = 196,733,899,898.88
  5. Step 5: Solve for x
    x = 196,733,899,898.88/456,012.80
  6. Step 6: Final answer
    x = 431,421.88

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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.