Home / 1,105,136.78-1,525,073.55-621,701.78

Finding the Fourth Proportional to 1,105,136.78, 1,525,073.55 and 621,701.78

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Solution

The fourth proportional to 1,105,136.78, 1,525,073.55 and 621,701.78 is: 857,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,136.78 : 1,525,073.55 = 621,701.78 : x
  2. Step 2: Convert to fraction form
    1,105,136.78/1,525,073.55 = 621,701.78/x
  3. Step 3: Cross multiply
    1,105,136.78x = 1,525,073.55 × 621,701.78
  4. Step 4: Simplify right side
    1,105,136.78x = 948,140,940,665.92
  5. Step 5: Solve for x
    x = 948,140,940,665.92/1,105,136.78
  6. Step 6: Final answer
    x = 857,939.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.