Home / 1,328,575.91-1,993,180.21-430,017.80

Finding the Fourth Proportional to 1,328,575.91, 1,993,180.21 and 430,017.80

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Solution

The fourth proportional to 1,328,575.91, 1,993,180.21 and 430,017.80 is: 645,129.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,575.91 : 1,993,180.21 = 430,017.80 : x
  2. Step 2: Convert to fraction form
    1,328,575.91/1,993,180.21 = 430,017.80/x
  3. Step 3: Cross multiply
    1,328,575.91x = 1,993,180.21 × 430,017.80
  4. Step 4: Simplify right side
    1,328,575.91x = 857,102,957,866.79
  5. Step 5: Solve for x
    x = 857,102,957,866.79/1,328,575.91
  6. Step 6: Final answer
    x = 645,129.08

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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.