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Finding the Fourth Proportional to 922,830.10, 1,384,504.35 and 449,530.90

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Solution

The fourth proportional to 922,830.10, 1,384,504.35 and 449,530.90 is: 674,422.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,830.10 : 1,384,504.35 = 449,530.90 : x
  2. Step 2: Convert to fraction form
    922,830.10/1,384,504.35 = 449,530.90/x
  3. Step 3: Cross multiply
    922,830.10x = 1,384,504.35 × 449,530.90
  4. Step 4: Simplify right side
    922,830.10x = 622,377,486,509.42
  5. Step 5: Solve for x
    x = 622,377,486,509.42/922,830.10
  6. Step 6: Final answer
    x = 674,422.61

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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.