Home / 839,528.40-1,259,446.20-340,942.80

Finding the Fourth Proportional to 839,528.40, 1,259,446.20 and 340,942.80

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Solution

The fourth proportional to 839,528.40, 1,259,446.20 and 340,942.80 is: 511,476.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,528.40 : 1,259,446.20 = 340,942.80 : x
  2. Step 2: Convert to fraction form
    839,528.40/1,259,446.20 = 340,942.80/x
  3. Step 3: Cross multiply
    839,528.40x = 1,259,446.20 × 340,942.80
  4. Step 4: Simplify right side
    839,528.40x = 429,399,113,877.36
  5. Step 5: Solve for x
    x = 429,399,113,877.36/839,528.40
  6. Step 6: Final answer
    x = 511,476.58

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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.