Home / 680,175.72-1,020,394.77-380,994.12

Finding the Fourth Proportional to 680,175.72, 1,020,394.77 and 380,994.12

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Solution

The fourth proportional to 680,175.72, 1,020,394.77 and 380,994.12 is: 571,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,175.72 : 1,020,394.77 = 380,994.12 : x
  2. Step 2: Convert to fraction form
    680,175.72/1,020,394.77 = 380,994.12/x
  3. Step 3: Cross multiply
    680,175.72x = 1,020,394.77 × 380,994.12
  4. Step 4: Simplify right side
    680,175.72x = 388,764,407,448.75
  5. Step 5: Solve for x
    x = 388,764,407,448.75/680,175.72
  6. Step 6: Final answer
    x = 571,564.66

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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.