Home / 1,328,960.57-1,993,636.49-430,103.57

Finding the Fourth Proportional to 1,328,960.57, 1,993,636.49 and 430,103.57

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Solution

The fourth proportional to 1,328,960.57, 1,993,636.49 and 430,103.57 is: 645,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,960.57 : 1,993,636.49 = 430,103.57 : x
  2. Step 2: Convert to fraction form
    1,328,960.57/1,993,636.49 = 430,103.57/x
  3. Step 3: Cross multiply
    1,328,960.57x = 1,993,636.49 × 430,103.57
  4. Step 4: Simplify right side
    1,328,960.57x = 857,470,159,512.57
  5. Step 5: Solve for x
    x = 857,470,159,512.57/1,328,960.57
  6. Step 6: Final answer
    x = 645,218.66

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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.