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Finding the Fourth Proportional to 685,616.76, 1,028,814 and 370,066.68

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Solution

The fourth proportional to 685,616.76, 1,028,814 and 370,066.68 is: 555,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,616.76 : 1,028,814 = 370,066.68 : x
  2. Step 2: Convert to fraction form
    685,616.76/1,028,814 = 370,066.68/x
  3. Step 3: Cross multiply
    685,616.76x = 1,028,814 × 370,066.68
  4. Step 4: Simplify right side
    685,616.76x = 380,729,781,317.52
  5. Step 5: Solve for x
    x = 380,729,781,317.52/685,616.76
  6. Step 6: Final answer
    x = 555,309.91

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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.