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Finding the Fourth Proportional to 888,858.65, 1,333,419.20 and 257,690.45

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Solution

The fourth proportional to 888,858.65, 1,333,419.20 and 257,690.45 is: 386,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,858.65 : 1,333,419.20 = 257,690.45 : x
  2. Step 2: Convert to fraction form
    888,858.65/1,333,419.20 = 257,690.45/x
  3. Step 3: Cross multiply
    888,858.65x = 1,333,419.20 × 257,690.45
  4. Step 4: Simplify right side
    888,858.65x = 343,609,385,731.09
  5. Step 5: Solve for x
    x = 343,609,385,731.09/888,858.65
  6. Step 6: Final answer
    x = 386,573.71

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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.