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Finding the Fourth Proportional to 405,562.80, 608,344.20 and 405,562.80

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Solution

The fourth proportional to 405,562.80, 608,344.20 and 405,562.80 is: 608,344.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,562.80 : 608,344.20 = 405,562.80 : x
  2. Step 2: Convert to fraction form
    405,562.80/608,344.20 = 405,562.80/x
  3. Step 3: Cross multiply
    405,562.80x = 608,344.20 × 405,562.80
  4. Step 4: Simplify right side
    405,562.80x = 246,721,777,115.76
  5. Step 5: Solve for x
    x = 246,721,777,115.76/405,562.80
  6. Step 6: Final answer
    x = 608,344.20

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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.