Home / 711,972.72-1,072,912.37-644,525.64

Finding the Fourth Proportional to 711,972.72, 1,072,912.37 and 644,525.64

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Solution

The fourth proportional to 711,972.72, 1,072,912.37 and 644,525.64 is: 971,272.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,972.72 : 1,072,912.37 = 644,525.64 : x
  2. Step 2: Convert to fraction form
    711,972.72/1,072,912.37 = 644,525.64/x
  3. Step 3: Cross multiply
    711,972.72x = 1,072,912.37 × 644,525.64
  4. Step 4: Simplify right side
    711,972.72x = 691,519,528,715.54
  5. Step 5: Solve for x
    x = 691,519,528,715.54/711,972.72
  6. Step 6: Final answer
    x = 971,272.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.