Home / 1,285,900.36-1,928,955.63-645,874.94

Finding the Fourth Proportional to 1,285,900.36, 1,928,955.63 and 645,874.94

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Solution

The fourth proportional to 1,285,900.36, 1,928,955.63 and 645,874.94 is: 968,865.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,900.36 : 1,928,955.63 = 645,874.94 : x
  2. Step 2: Convert to fraction form
    1,285,900.36/1,928,955.63 = 645,874.94/x
  3. Step 3: Cross multiply
    1,285,900.36x = 1,928,955.63 × 645,874.94
  4. Step 4: Simplify right side
    1,285,900.36x = 1,245,864,101,788.91
  5. Step 5: Solve for x
    x = 1,245,864,101,788.91/1,285,900.36
  6. Step 6: Final answer
    x = 968,865.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.