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Finding the Fourth Proportional to 842,996.80, 1,263,903.80 and 310,449.54

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Solution

The fourth proportional to 842,996.80, 1,263,903.80 and 310,449.54 is: 465,456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,996.80 : 1,263,903.80 = 310,449.54 : x
  2. Step 2: Convert to fraction form
    842,996.80/1,263,903.80 = 310,449.54/x
  3. Step 3: Cross multiply
    842,996.80x = 1,263,903.80 × 310,449.54
  4. Step 4: Simplify right side
    842,996.80x = 392,378,358,247.92
  5. Step 5: Solve for x
    x = 392,378,358,247.92/842,996.80
  6. Step 6: Final answer
    x = 465,456.52

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1.5x scale

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.