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Finding the Fourth Proportional to 435,914.88, 653,476.23 and 388,675.68

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Solution

The fourth proportional to 435,914.88, 653,476.23 and 388,675.68 is: 582,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,914.88 : 653,476.23 = 388,675.68 : x
  2. Step 2: Convert to fraction form
    435,914.88/653,476.23 = 388,675.68/x
  3. Step 3: Cross multiply
    435,914.88x = 653,476.23 × 388,675.68
  4. Step 4: Simplify right side
    435,914.88x = 253,990,318,059.09
  5. Step 5: Solve for x
    x = 253,990,318,059.09/435,914.88
  6. Step 6: Final answer
    x = 582,660.35

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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.