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Finding the Fourth Proportional to 710,651.88, 980,700.03 and 388,361.97

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Solution

The fourth proportional to 710,651.88, 980,700.03 and 388,361.97 is: 535,939.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,651.88 : 980,700.03 = 388,361.97 : x
  2. Step 2: Convert to fraction form
    710,651.88/980,700.03 = 388,361.97/x
  3. Step 3: Cross multiply
    710,651.88x = 980,700.03 × 388,361.97
  4. Step 4: Simplify right side
    710,651.88x = 380,866,595,629.86
  5. Step 5: Solve for x
    x = 380,866,595,629.86/710,651.88
  6. Step 6: Final answer
    x = 535,939.76

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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.