Home / 1,328,576.91-1,993,181.71-430,018.80

Finding the Fourth Proportional to 1,328,576.91, 1,993,181.71 and 430,018.80

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Solution

The fourth proportional to 1,328,576.91, 1,993,181.71 and 430,018.80 is: 645,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,576.91 : 1,993,181.71 = 430,018.80 : x
  2. Step 2: Convert to fraction form
    1,328,576.91/1,993,181.71 = 430,018.80/x
  3. Step 3: Cross multiply
    1,328,576.91x = 1,993,181.71 × 430,018.80
  4. Step 4: Simplify right side
    1,328,576.91x = 857,105,607,116.15
  5. Step 5: Solve for x
    x = 857,105,607,116.15/1,328,576.91
  6. Step 6: Final answer
    x = 645,130.59

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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.