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Finding the Fourth Proportional to 439,830.10, 659,745.15 and 439,830.10

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Solution

The fourth proportional to 439,830.10, 659,745.15 and 439,830.10 is: 659,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,830.10 : 659,745.15 = 439,830.10 : x
  2. Step 2: Convert to fraction form
    439,830.10/659,745.15 = 439,830.10/x
  3. Step 3: Cross multiply
    439,830.10x = 659,745.15 × 439,830.10
  4. Step 4: Simplify right side
    439,830.10x = 290,175,775,299.02
  5. Step 5: Solve for x
    x = 290,175,775,299.02/439,830.10
  6. Step 6: Final answer
    x = 659,745.15

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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.