Home / 642,255.40-962,216.70-392,645.80

Finding the Fourth Proportional to 642,255.40, 962,216.70 and 392,645.80

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Solution

The fourth proportional to 642,255.40, 962,216.70 and 392,645.80 is: 588,255.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,255.40 : 962,216.70 = 392,645.80 : x
  2. Step 2: Convert to fraction form
    642,255.40/962,216.70 = 392,645.80/x
  3. Step 3: Cross multiply
    642,255.40x = 962,216.70 × 392,645.80
  4. Step 4: Simplify right side
    642,255.40x = 377,810,345,944.86
  5. Step 5: Solve for x
    x = 377,810,345,944.86/642,255.40
  6. Step 6: Final answer
    x = 588,255.62

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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.