Home / 857,845.10-1,285,930.89-408,445.22

Finding the Fourth Proportional to 857,845.10, 1,285,930.89 and 408,445.22

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Solution

The fourth proportional to 857,845.10, 1,285,930.89 and 408,445.22 is: 612,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,845.10 : 1,285,930.89 = 408,445.22 : x
  2. Step 2: Convert to fraction form
    857,845.10/1,285,930.89 = 408,445.22/x
  3. Step 3: Cross multiply
    857,845.10x = 1,285,930.89 × 408,445.22
  4. Step 4: Simplify right side
    857,845.10x = 525,232,328,485.67
  5. Step 5: Solve for x
    x = 525,232,328,485.67/857,845.10
  6. Step 6: Final answer
    x = 612,269.43

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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.