Home / 1,215,128.09-1,822,950.48-416,195.12

Finding the Fourth Proportional to 1,215,128.09, 1,822,950.48 and 416,195.12

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Solution

The fourth proportional to 1,215,128.09, 1,822,950.48 and 416,195.12 is: 624,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,128.09 : 1,822,950.48 = 416,195.12 : x
  2. Step 2: Convert to fraction form
    1,215,128.09/1,822,950.48 = 416,195.12/x
  3. Step 3: Cross multiply
    1,215,128.09x = 1,822,950.48 × 416,195.12
  4. Step 4: Simplify right side
    1,215,128.09x = 758,703,084,662.91
  5. Step 5: Solve for x
    x = 758,703,084,662.91/1,215,128.09
  6. Step 6: Final answer
    x = 624,381.16

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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.