Home / 1,210,867.80-1,815,005.70-411,408.60

Finding the Fourth Proportional to 1,210,867.80, 1,815,005.70 and 411,408.60

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Solution

The fourth proportional to 1,210,867.80, 1,815,005.70 and 411,408.60 is: 616,672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,867.80 : 1,815,005.70 = 411,408.60 : x
  2. Step 2: Convert to fraction form
    1,210,867.80/1,815,005.70 = 411,408.60/x
  3. Step 3: Cross multiply
    1,210,867.80x = 1,815,005.70 × 411,408.60
  4. Step 4: Simplify right side
    1,210,867.80x = 746,708,954,029.02
  5. Step 5: Solve for x
    x = 746,708,954,029.02/1,210,867.80
  6. Step 6: Final answer
    x = 616,672.57

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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.