Home / 1,220,021.29-1,683,629.54-676,192.19

Finding the Fourth Proportional to 1,220,021.29, 1,683,629.54 and 676,192.19

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Solution

The fourth proportional to 1,220,021.29, 1,683,629.54 and 676,192.19 is: 933,145.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,021.29 : 1,683,629.54 = 676,192.19 : x
  2. Step 2: Convert to fraction form
    1,220,021.29/1,683,629.54 = 676,192.19/x
  3. Step 3: Cross multiply
    1,220,021.29x = 1,683,629.54 × 676,192.19
  4. Step 4: Simplify right side
    1,220,021.29x = 1,138,457,141,273.11
  5. Step 5: Solve for x
    x = 1,138,457,141,273.11/1,220,021.29
  6. Step 6: Final answer
    x = 933,145.31

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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.