Home / 2,166,195.38-2,989,349.82-1,186,196.22

Finding the Fourth Proportional to 2,166,195.38, 2,989,349.82 and 1,186,196.22

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Solution

The fourth proportional to 2,166,195.38, 2,989,349.82 and 1,186,196.22 is: 1,636,950.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166,195.38 : 2,989,349.82 = 1,186,196.22 : x
  2. Step 2: Convert to fraction form
    2,166,195.38/2,989,349.82 = 1,186,196.22/x
  3. Step 3: Cross multiply
    2,166,195.38x = 2,989,349.82 × 1,186,196.22
  4. Step 4: Simplify right side
    2,166,195.38x = 3,545,955,456,741.68
  5. Step 5: Solve for x
    x = 3,545,955,456,741.68/2,166,195.38
  6. Step 6: Final answer
    x = 1,636,950.89

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Double scale
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1.5x scale

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.