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Finding the Fourth Proportional to 413,837.20, 620,755.80 and 245,875.60

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Solution

The fourth proportional to 413,837.20, 620,755.80 and 245,875.60 is: 368,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,837.20 : 620,755.80 = 245,875.60 : x
  2. Step 2: Convert to fraction form
    413,837.20/620,755.80 = 245,875.60/x
  3. Step 3: Cross multiply
    413,837.20x = 620,755.80 × 245,875.60
  4. Step 4: Simplify right side
    413,837.20x = 152,628,704,778.48
  5. Step 5: Solve for x
    x = 152,628,704,778.48/413,837.20
  6. Step 6: Final answer
    x = 368,813.40

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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.