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Finding the Fourth Proportional to 1,269,788.40, 1,752,358.32 and 696,849.12

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Solution

The fourth proportional to 1,269,788.40, 1,752,358.32 and 696,849.12 is: 961,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,788.40 : 1,752,358.32 = 696,849.12 : x
  2. Step 2: Convert to fraction form
    1,269,788.40/1,752,358.32 = 696,849.12/x
  3. Step 3: Cross multiply
    1,269,788.40x = 1,752,358.32 × 696,849.12
  4. Step 4: Simplify right side
    1,269,788.40x = 1,221,129,353,216.68
  5. Step 5: Solve for x
    x = 1,221,129,353,216.68/1,269,788.40
  6. Step 6: Final answer
    x = 961,679.41

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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.