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Finding the Fourth Proportional to 413,860.20, 620,790.30 and 245,898.60

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Solution

The fourth proportional to 413,860.20, 620,790.30 and 245,898.60 is: 368,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,860.20 : 620,790.30 = 245,898.60 : x
  2. Step 2: Convert to fraction form
    413,860.20/620,790.30 = 245,898.60/x
  3. Step 3: Cross multiply
    413,860.20x = 620,790.30 × 245,898.60
  4. Step 4: Simplify right side
    413,860.20x = 152,651,465,663.58
  5. Step 5: Solve for x
    x = 152,651,465,663.58/413,860.20
  6. Step 6: Final answer
    x = 368,847.90

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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.