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Finding the Fourth Proportional to 486,000.65, 681,100.75 and 486,000.65

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Solution

The fourth proportional to 486,000.65, 681,100.75 and 486,000.65 is: 681,100.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.65 : 681,100.75 = 486,000.65 : x
  2. Step 2: Convert to fraction form
    486,000.65/681,100.75 = 486,000.65/x
  3. Step 3: Cross multiply
    486,000.65x = 681,100.75 × 486,000.65
  4. Step 4: Simplify right side
    486,000.65x = 331,015,407,215.49
  5. Step 5: Solve for x
    x = 331,015,407,215.49/486,000.65
  6. Step 6: Final answer
    x = 681,100.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.