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Finding the Fourth Proportional to 668,711.30, 922,813.89 and 366,905.30

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Solution

The fourth proportional to 668,711.30, 922,813.89 and 366,905.30 is: 506,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,711.30 : 922,813.89 = 366,905.30 : x
  2. Step 2: Convert to fraction form
    668,711.30/922,813.89 = 366,905.30/x
  3. Step 3: Cross multiply
    668,711.30x = 922,813.89 × 366,905.30
  4. Step 4: Simplify right side
    668,711.30x = 338,585,307,154.62
  5. Step 5: Solve for x
    x = 338,585,307,154.62/668,711.30
  6. Step 6: Final answer
    x = 506,325.09

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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.