Home / 1,216,645.30-1,678,981.39-672,817.68

Finding the Fourth Proportional to 1,216,645.30, 1,678,981.39 and 672,817.68

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Solution

The fourth proportional to 1,216,645.30, 1,678,981.39 and 672,817.68 is: 928,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,645.30 : 1,678,981.39 = 672,817.68 : x
  2. Step 2: Convert to fraction form
    1,216,645.30/1,678,981.39 = 672,817.68/x
  3. Step 3: Cross multiply
    1,216,645.30x = 1,678,981.39 × 672,817.68
  4. Step 4: Simplify right side
    1,216,645.30x = 1,129,648,355,188.07
  5. Step 5: Solve for x
    x = 1,129,648,355,188.07/1,216,645.30
  6. Step 6: Final answer
    x = 928,494.41

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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.