Home / 902,400.60-1,245,190.96-515,191.40

Finding the Fourth Proportional to 902,400.60, 1,245,190.96 and 515,191.40

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Solution

The fourth proportional to 902,400.60, 1,245,190.96 and 515,191.40 is: 710,894.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,400.60 : 1,245,190.96 = 515,191.40 : x
  2. Step 2: Convert to fraction form
    902,400.60/1,245,190.96 = 515,191.40/x
  3. Step 3: Cross multiply
    902,400.60x = 1,245,190.96 × 515,191.40
  4. Step 4: Simplify right side
    902,400.60x = 641,511,677,143.49
  5. Step 5: Solve for x
    x = 641,511,677,143.49/902,400.60
  6. Step 6: Final answer
    x = 710,894.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.