Home / 1,216,645.80-1,678,982.08-672,818.18

Finding the Fourth Proportional to 1,216,645.80, 1,678,982.08 and 672,818.18

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Solution

The fourth proportional to 1,216,645.80, 1,678,982.08 and 672,818.18 is: 928,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,645.80 : 1,678,982.08 = 672,818.18 : x
  2. Step 2: Convert to fraction form
    1,216,645.80/1,678,982.08 = 672,818.18/x
  3. Step 3: Cross multiply
    1,216,645.80x = 1,678,982.08 × 672,818.18
  4. Step 4: Simplify right side
    1,216,645.80x = 1,129,649,667,318.21
  5. Step 5: Solve for x
    x = 1,129,649,667,318.21/1,216,645.80
  6. Step 6: Final answer
    x = 928,495.10

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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.