Home / 642,255.68-886,300.98-355,769.48

Finding the Fourth Proportional to 642,255.68, 886,300.98 and 355,769.48

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Solution

The fourth proportional to 642,255.68, 886,300.98 and 355,769.48 is: 490,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,255.68 : 886,300.98 = 355,769.48 : x
  2. Step 2: Convert to fraction form
    642,255.68/886,300.98 = 355,769.48/x
  3. Step 3: Cross multiply
    642,255.68x = 886,300.98 × 355,769.48
  4. Step 4: Simplify right side
    642,255.68x = 315,318,838,778.09
  5. Step 5: Solve for x
    x = 315,318,838,778.09/642,255.68
  6. Step 6: Final answer
    x = 490,955.31

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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.