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Finding the Fourth Proportional to 668,530, 922,571.58 and 366,724

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Solution

The fourth proportional to 668,530, 922,571.58 and 366,724 is: 506,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,530 : 922,571.58 = 366,724 : x
  2. Step 2: Convert to fraction form
    668,530/922,571.58 = 366,724/x
  3. Step 3: Cross multiply
    668,530x = 922,571.58 × 366,724
  4. Step 4: Simplify right side
    668,530x = 338,329,140,103.92
  5. Step 5: Solve for x
    x = 338,329,140,103.92/668,530
  6. Step 6: Final answer
    x = 506,079.22

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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.