Home / 839,918.20-1,259,877.30-520,324.60

Finding the Fourth Proportional to 839,918.20, 1,259,877.30 and 520,324.60

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Solution

The fourth proportional to 839,918.20, 1,259,877.30 and 520,324.60 is: 780,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,918.20 : 1,259,877.30 = 520,324.60 : x
  2. Step 2: Convert to fraction form
    839,918.20/1,259,877.30 = 520,324.60/x
  3. Step 3: Cross multiply
    839,918.20x = 1,259,877.30 × 520,324.60
  4. Step 4: Simplify right side
    839,918.20x = 655,545,152,171.58
  5. Step 5: Solve for x
    x = 655,545,152,171.58/839,918.20
  6. Step 6: Final answer
    x = 780,486.90

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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.