Home / 1,328,540.60-1,991,450.10-653,583.80

Finding the Fourth Proportional to 1,328,540.60, 1,991,450.10 and 653,583.80

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Solution

The fourth proportional to 1,328,540.60, 1,991,450.10 and 653,583.80 is: 979,706.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,540.60 : 1,991,450.10 = 653,583.80 : x
  2. Step 2: Convert to fraction form
    1,328,540.60/1,991,450.10 = 653,583.80/x
  3. Step 3: Cross multiply
    1,328,540.60x = 1,991,450.10 × 653,583.80
  4. Step 4: Simplify right side
    1,328,540.60x = 1,301,579,523,868.38
  5. Step 5: Solve for x
    x = 1,301,579,523,868.38/1,328,540.60
  6. Step 6: Final answer
    x = 979,706.25

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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.