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Finding the Fourth Proportional to 668,745.30, 922,860.81 and 366,939.30

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Solution

The fourth proportional to 668,745.30, 922,860.81 and 366,939.30 is: 506,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,745.30 : 922,860.81 = 366,939.30 : x
  2. Step 2: Convert to fraction form
    668,745.30/922,860.81 = 366,939.30/x
  3. Step 3: Cross multiply
    668,745.30x = 922,860.81 × 366,939.30
  4. Step 4: Simplify right side
    668,745.30x = 338,633,899,618.83
  5. Step 5: Solve for x
    x = 338,633,899,618.83/668,745.30
  6. Step 6: Final answer
    x = 506,372.01

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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.