Home / 1,384,815.75-1,911,111.75-781,203.75

Finding the Fourth Proportional to 1,384,815.75, 1,911,111.75 and 781,203.75

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Solution

The fourth proportional to 1,384,815.75, 1,911,111.75 and 781,203.75 is: 1,078,098.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,815.75 : 1,911,111.75 = 781,203.75 : x
  2. Step 2: Convert to fraction form
    1,384,815.75/1,911,111.75 = 781,203.75/x
  3. Step 3: Cross multiply
    1,384,815.75x = 1,911,111.75 × 781,203.75
  4. Step 4: Simplify right side
    1,384,815.75x = 1,492,967,665,769.06
  5. Step 5: Solve for x
    x = 1,492,967,665,769.06/1,384,815.75
  6. Step 6: Final answer
    x = 1,078,098.42

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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.