Home / 1,221,511.59-1,685,687.97-677,647.40

Finding the Fourth Proportional to 1,221,511.59, 1,685,687.97 and 677,647.40

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Solution

The fourth proportional to 1,221,511.59, 1,685,687.97 and 677,647.40 is: 935,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,511.59 : 1,685,687.97 = 677,647.40 : x
  2. Step 2: Convert to fraction form
    1,221,511.59/1,685,687.97 = 677,647.40/x
  3. Step 3: Cross multiply
    1,221,511.59x = 1,685,687.97 × 677,647.40
  4. Step 4: Simplify right side
    1,221,511.59x = 1,142,302,070,081.78
  5. Step 5: Solve for x
    x = 1,142,302,070,081.78/1,221,511.59
  6. Step 6: Final answer
    x = 935,154.51

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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.