Home / 711,076.80-1,066,615.20-212,440.80

Finding the Fourth Proportional to 711,076.80, 1,066,615.20 and 212,440.80

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Solution

The fourth proportional to 711,076.80, 1,066,615.20 and 212,440.80 is: 318,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,076.80 : 1,066,615.20 = 212,440.80 : x
  2. Step 2: Convert to fraction form
    711,076.80/1,066,615.20 = 212,440.80/x
  3. Step 3: Cross multiply
    711,076.80x = 1,066,615.20 × 212,440.80
  4. Step 4: Simplify right side
    711,076.80x = 226,592,586,380.16
  5. Step 5: Solve for x
    x = 226,592,586,380.16/711,076.80
  6. Step 6: Final answer
    x = 318,661.20

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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.