Home / 1,216,647.82-1,678,984.86-672,820.21

Finding the Fourth Proportional to 1,216,647.82, 1,678,984.86 and 672,820.21

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Solution

The fourth proportional to 1,216,647.82, 1,678,984.86 and 672,820.21 is: 928,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,647.82 : 1,678,984.86 = 672,820.21 : x
  2. Step 2: Convert to fraction form
    1,216,647.82/1,678,984.86 = 672,820.21/x
  3. Step 3: Cross multiply
    1,216,647.82x = 1,678,984.86 × 672,820.21
  4. Step 4: Simplify right side
    1,216,647.82x = 1,129,654,946,092.02
  5. Step 5: Solve for x
    x = 1,129,654,946,092.02/1,216,647.82
  6. Step 6: Final answer
    x = 928,497.90

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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.