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Finding the Fourth Proportional to 710,761.56, 980,824.29 and 388,469.04

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Solution

The fourth proportional to 710,761.56, 980,824.29 and 388,469.04 is: 536,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,761.56 : 980,824.29 = 388,469.04 : x
  2. Step 2: Convert to fraction form
    710,761.56/980,824.29 = 388,469.04/x
  3. Step 3: Cross multiply
    710,761.56x = 980,824.29 × 388,469.04
  4. Step 4: Simplify right side
    710,761.56x = 381,019,870,344.98
  5. Step 5: Solve for x
    x = 381,019,870,344.98/710,761.56
  6. Step 6: Final answer
    x = 536,072.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.