Home / 1,189,428.12-1,641,386.33-673,172.80

Finding the Fourth Proportional to 1,189,428.12, 1,641,386.33 and 673,172.80

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Solution

The fourth proportional to 1,189,428.12, 1,641,386.33 and 673,172.80 is: 928,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,428.12 : 1,641,386.33 = 673,172.80 : x
  2. Step 2: Convert to fraction form
    1,189,428.12/1,641,386.33 = 673,172.80/x
  3. Step 3: Cross multiply
    1,189,428.12x = 1,641,386.33 × 673,172.80
  4. Step 4: Simplify right side
    1,189,428.12x = 1,104,936,631,319.29
  5. Step 5: Solve for x
    x = 1,104,936,631,319.29/1,189,428.12
  6. Step 6: Final answer
    x = 928,964.61

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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.