Home / 1,216,399.80-1,678,563.90-672,503.88

Finding the Fourth Proportional to 1,216,399.80, 1,678,563.90 and 672,503.88

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Solution

The fourth proportional to 1,216,399.80, 1,678,563.90 and 672,503.88 is: 928,017.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,399.80 : 1,678,563.90 = 672,503.88 : x
  2. Step 2: Convert to fraction form
    1,216,399.80/1,678,563.90 = 672,503.88/x
  3. Step 3: Cross multiply
    1,216,399.80x = 1,678,563.90 × 672,503.88
  4. Step 4: Simplify right side
    1,216,399.80x = 1,128,840,735,577.93
  5. Step 5: Solve for x
    x = 1,128,840,735,577.93/1,216,399.80
  6. Step 6: Final answer
    x = 928,017.86

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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.