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Finding the Fourth Proportional to 408,048.45, 612,072.68 and 408,048.45

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Solution

The fourth proportional to 408,048.45, 612,072.68 and 408,048.45 is: 612,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,048.45 : 612,072.68 = 408,048.45 : x
  2. Step 2: Convert to fraction form
    408,048.45/612,072.68 = 408,048.45/x
  3. Step 3: Cross multiply
    408,048.45x = 612,072.68 × 408,048.45
  4. Step 4: Simplify right side
    408,048.45x = 249,755,306,321.10
  5. Step 5: Solve for x
    x = 249,755,306,321.10/408,048.45
  6. Step 6: Final answer
    x = 612,072.68

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1.5x scale

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.