Home / 1,262,819.40-1,742,668.80-689,844.84

Finding the Fourth Proportional to 1,262,819.40, 1,742,668.80 and 689,844.84

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Solution

The fourth proportional to 1,262,819.40, 1,742,668.80 and 689,844.84 is: 951,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,819.40 : 1,742,668.80 = 689,844.84 : x
  2. Step 2: Convert to fraction form
    1,262,819.40/1,742,668.80 = 689,844.84/x
  3. Step 3: Cross multiply
    1,262,819.40x = 1,742,668.80 × 689,844.84
  4. Step 4: Simplify right side
    1,262,819.40x = 1,202,171,079,508.99
  5. Step 5: Solve for x
    x = 1,202,171,079,508.99/1,262,819.40
  6. Step 6: Final answer
    x = 951,973.88

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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.