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Finding the Fourth Proportional to 408,300,751.80, 612,451,127.70 and 408,300,751.80

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Solution

The fourth proportional to 408,300,751.80, 612,451,127.70 and 408,300,751.80 is: 612,451,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,300,751.80 : 612,451,127.70 = 408,300,751.80 : x
  2. Step 2: Convert to fraction form
    408,300,751.80/612,451,127.70 = 408,300,751.80/x
  3. Step 3: Cross multiply
    408,300,751.80x = 612,451,127.70 × 408,300,751.80
  4. Step 4: Simplify right side
    408,300,751.80x = 250,064,255,880,667,840
  5. Step 5: Solve for x
    x = 250,064,255,880,667,840/408,300,751.80
  6. Step 6: Final answer
    x = 612,451,127.70

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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.