Home / 711,405.40-1,066,743.30-212,704.60

Finding the Fourth Proportional to 711,405.40, 1,066,743.30 and 212,704.60

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Solution

The fourth proportional to 711,405.40, 1,066,743.30 and 212,704.60 is: 318,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,405.40 : 1,066,743.30 = 212,704.60 : x
  2. Step 2: Convert to fraction form
    711,405.40/1,066,743.30 = 212,704.60/x
  3. Step 3: Cross multiply
    711,405.40x = 1,066,743.30 × 212,704.60
  4. Step 4: Simplify right side
    711,405.40x = 226,901,206,929.18
  5. Step 5: Solve for x
    x = 226,901,206,929.18/711,405.40
  6. Step 6: Final answer
    x = 318,947.83

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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.