Home / 648,039.76-972,023.24-198,759.40

Finding the Fourth Proportional to 648,039.76, 972,023.24 and 198,759.40

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Solution

The fourth proportional to 648,039.76, 972,023.24 and 198,759.40 is: 298,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,039.76 : 972,023.24 = 198,759.40 : x
  2. Step 2: Convert to fraction form
    648,039.76/972,023.24 = 198,759.40/x
  3. Step 3: Cross multiply
    648,039.76x = 972,023.24 × 198,759.40
  4. Step 4: Simplify right side
    648,039.76x = 193,198,755,968.46
  5. Step 5: Solve for x
    x = 193,198,755,968.46/648,039.76
  6. Step 6: Final answer
    x = 298,127.94

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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.