Home / 1,213,916.40-1,820,701.80-415,234.80

Finding the Fourth Proportional to 1,213,916.40, 1,820,701.80 and 415,234.80

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Solution

The fourth proportional to 1,213,916.40, 1,820,701.80 and 415,234.80 is: 622,793.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,916.40 : 1,820,701.80 = 415,234.80 : x
  2. Step 2: Convert to fraction form
    1,213,916.40/1,820,701.80 = 415,234.80/x
  3. Step 3: Cross multiply
    1,213,916.40x = 1,820,701.80 × 415,234.80
  4. Step 4: Simplify right side
    1,213,916.40x = 756,018,747,782.64
  5. Step 5: Solve for x
    x = 756,018,747,782.64/1,213,916.40
  6. Step 6: Final answer
    x = 622,793.09

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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.