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Finding the Fourth Proportional to 863,132.40, 1,295,087.40 and 413,679.60

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Solution

The fourth proportional to 863,132.40, 1,295,087.40 and 413,679.60 is: 620,705.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,132.40 : 1,295,087.40 = 413,679.60 : x
  2. Step 2: Convert to fraction form
    863,132.40/1,295,087.40 = 413,679.60/x
  3. Step 3: Cross multiply
    863,132.40x = 1,295,087.40 × 413,679.60
  4. Step 4: Simplify right side
    863,132.40x = 535,751,237,597.04
  5. Step 5: Solve for x
    x = 535,751,237,597.04/863,132.40
  6. Step 6: Final answer
    x = 620,705.74

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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.