Home / 711,513.40-1,066,905.30-212,812.60

Finding the Fourth Proportional to 711,513.40, 1,066,905.30 and 212,812.60

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Solution

The fourth proportional to 711,513.40, 1,066,905.30 and 212,812.60 is: 319,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,513.40 : 1,066,905.30 = 212,812.60 : x
  2. Step 2: Convert to fraction form
    711,513.40/1,066,905.30 = 212,812.60/x
  3. Step 3: Cross multiply
    711,513.40x = 1,066,905.30 × 212,812.60
  4. Step 4: Simplify right side
    711,513.40x = 227,050,890,846.78
  5. Step 5: Solve for x
    x = 227,050,890,846.78/711,513.40
  6. Step 6: Final answer
    x = 319,109.79

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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.