Home / 455,148.20-682,722.30-278,001.20

Finding the Fourth Proportional to 455,148.20, 682,722.30 and 278,001.20

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Solution

The fourth proportional to 455,148.20, 682,722.30 and 278,001.20 is: 417,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,148.20 : 682,722.30 = 278,001.20 : x
  2. Step 2: Convert to fraction form
    455,148.20/682,722.30 = 278,001.20/x
  3. Step 3: Cross multiply
    455,148.20x = 682,722.30 × 278,001.20
  4. Step 4: Simplify right side
    455,148.20x = 189,797,618,666.76
  5. Step 5: Solve for x
    x = 189,797,618,666.76/455,148.20
  6. Step 6: Final answer
    x = 417,001.80

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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.