Home / 1,216,645.57-1,678,981.78-672,817.96

Finding the Fourth Proportional to 1,216,645.57, 1,678,981.78 and 672,817.96

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Solution

The fourth proportional to 1,216,645.57, 1,678,981.78 and 672,817.96 is: 928,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,645.57 : 1,678,981.78 = 672,817.96 : x
  2. Step 2: Convert to fraction form
    1,216,645.57/1,678,981.78 = 672,817.96/x
  3. Step 3: Cross multiply
    1,216,645.57x = 1,678,981.78 × 672,817.96
  4. Step 4: Simplify right side
    1,216,645.57x = 1,129,649,096,096.77
  5. Step 5: Solve for x
    x = 1,129,649,096,096.77/1,216,645.57
  6. Step 6: Final answer
    x = 928,494.81

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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.