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Finding the Fourth Proportional to 980,768.82, 1,353,462.12 and 551,048.70

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Solution

The fourth proportional to 980,768.82, 1,353,462.12 and 551,048.70 is: 760,447.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,768.82 : 1,353,462.12 = 551,048.70 : x
  2. Step 2: Convert to fraction form
    980,768.82/1,353,462.12 = 551,048.70/x
  3. Step 3: Cross multiply
    980,768.82x = 1,353,462.12 × 551,048.70
  4. Step 4: Simplify right side
    980,768.82x = 745,823,541,725.24
  5. Step 5: Solve for x
    x = 745,823,541,725.24/980,768.82
  6. Step 6: Final answer
    x = 760,447.85

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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.