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Finding the Fourth Proportional to 768,118.82, 1,059,708.33 and 481,139.30

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Solution

The fourth proportional to 768,118.82, 1,059,708.33 and 481,139.30 is: 663,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,118.82 : 1,059,708.33 = 481,139.30 : x
  2. Step 2: Convert to fraction form
    768,118.82/1,059,708.33 = 481,139.30/x
  3. Step 3: Cross multiply
    768,118.82x = 1,059,708.33 × 481,139.30
  4. Step 4: Simplify right side
    768,118.82x = 509,867,324,100.37
  5. Step 5: Solve for x
    x = 509,867,324,100.37/768,118.82
  6. Step 6: Final answer
    x = 663,787.05

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1.5x scale

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.