Home / 839,926.80-1,261,202.40-485,632.80

Finding the Fourth Proportional to 839,926.80, 1,261,202.40 and 485,632.80

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Solution

The fourth proportional to 839,926.80, 1,261,202.40 and 485,632.80 is: 729,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,926.80 : 1,261,202.40 = 485,632.80 : x
  2. Step 2: Convert to fraction form
    839,926.80/1,261,202.40 = 485,632.80/x
  3. Step 3: Cross multiply
    839,926.80x = 1,261,202.40 × 485,632.80
  4. Step 4: Simplify right side
    839,926.80x = 612,481,252,878.72
  5. Step 5: Solve for x
    x = 612,481,252,878.72/839,926.80
  6. Step 6: Final answer
    x = 729,207.89

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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.