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Finding the Fourth Proportional to 689,820.03, 951,950.88 and 388,014.03

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Solution

The fourth proportional to 689,820.03, 951,950.88 and 388,014.03 is: 535,458.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,820.03 : 951,950.88 = 388,014.03 : x
  2. Step 2: Convert to fraction form
    689,820.03/951,950.88 = 388,014.03/x
  3. Step 3: Cross multiply
    689,820.03x = 951,950.88 × 388,014.03
  4. Step 4: Simplify right side
    689,820.03x = 369,370,297,310.85
  5. Step 5: Solve for x
    x = 369,370,297,310.85/689,820.03
  6. Step 6: Final answer
    x = 535,458.93

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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.