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Finding the Fourth Proportional to 414,999.80, 621,624.90 and 414,999.80

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Solution

The fourth proportional to 414,999.80, 621,624.90 and 414,999.80 is: 621,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,999.80 : 621,624.90 = 414,999.80 : x
  2. Step 2: Convert to fraction form
    414,999.80/621,624.90 = 414,999.80/x
  3. Step 3: Cross multiply
    414,999.80x = 621,624.90 × 414,999.80
  4. Step 4: Simplify right side
    414,999.80x = 257,974,209,175.02
  5. Step 5: Solve for x
    x = 257,974,209,175.02/414,999.80
  6. Step 6: Final answer
    x = 621,624.90

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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.