Home / 1,186,182.91-1,636,940.22-642,318.75

Finding the Fourth Proportional to 1,186,182.91, 1,636,940.22 and 642,318.75

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Solution

The fourth proportional to 1,186,182.91, 1,636,940.22 and 642,318.75 is: 886,404.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,182.91 : 1,636,940.22 = 642,318.75 : x
  2. Step 2: Convert to fraction form
    1,186,182.91/1,636,940.22 = 642,318.75/x
  3. Step 3: Cross multiply
    1,186,182.91x = 1,636,940.22 × 642,318.75
  4. Step 4: Simplify right side
    1,186,182.91x = 1,051,437,391,450.27
  5. Step 5: Solve for x
    x = 1,051,437,391,450.27/1,186,182.91
  6. Step 6: Final answer
    x = 886,404.09

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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.