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Finding the Fourth Proportional to 668,382, 922,410.90 and 366,576

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Solution

The fourth proportional to 668,382, 922,410.90 and 366,576 is: 505,898.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,382 : 922,410.90 = 366,576 : x
  2. Step 2: Convert to fraction form
    668,382/922,410.90 = 366,576/x
  3. Step 3: Cross multiply
    668,382x = 922,410.90 × 366,576
  4. Step 4: Simplify right side
    668,382x = 338,133,698,078.40
  5. Step 5: Solve for x
    x = 338,133,698,078.40/668,382
  6. Step 6: Final answer
    x = 505,898.87

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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.