Home / 711,172.80-1,066,912.80-212,587.20

Finding the Fourth Proportional to 711,172.80, 1,066,912.80 and 212,587.20

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Solution

The fourth proportional to 711,172.80, 1,066,912.80 and 212,587.20 is: 318,926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,172.80 : 1,066,912.80 = 212,587.20 : x
  2. Step 2: Convert to fraction form
    711,172.80/1,066,912.80 = 212,587.20/x
  3. Step 3: Cross multiply
    711,172.80x = 1,066,912.80 × 212,587.20
  4. Step 4: Simplify right side
    711,172.80x = 226,812,004,796.16
  5. Step 5: Solve for x
    x = 226,812,004,796.16/711,172.80
  6. Step 6: Final answer
    x = 318,926.71

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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.