Home / 1,212,426.82-1,673,136.75-661,141.16

Finding the Fourth Proportional to 1,212,426.82, 1,673,136.75 and 661,141.16

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Solution

The fourth proportional to 1,212,426.82, 1,673,136.75 and 661,141.16 is: 912,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,426.82 : 1,673,136.75 = 661,141.16 : x
  2. Step 2: Convert to fraction form
    1,212,426.82/1,673,136.75 = 661,141.16/x
  3. Step 3: Cross multiply
    1,212,426.82x = 1,673,136.75 × 661,141.16
  4. Step 4: Simplify right side
    1,212,426.82x = 1,106,179,571,733.63
  5. Step 5: Solve for x
    x = 1,106,179,571,733.63/1,212,426.82
  6. Step 6: Final answer
    x = 912,368.12

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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.