Home / 685,744.66-1,028,781.15-286,163.11

Finding the Fourth Proportional to 685,744.66, 1,028,781.15 and 286,163.11

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Solution

The fourth proportional to 685,744.66, 1,028,781.15 and 286,163.11 is: 429,313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,744.66 : 1,028,781.15 = 286,163.11 : x
  2. Step 2: Convert to fraction form
    685,744.66/1,028,781.15 = 286,163.11/x
  3. Step 3: Cross multiply
    685,744.66x = 1,028,781.15 × 286,163.11
  4. Step 4: Simplify right side
    685,744.66x = 294,399,213,393.38
  5. Step 5: Solve for x
    x = 294,399,213,393.38/685,744.66
  6. Step 6: Final answer
    x = 429,313.17

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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.