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Finding the Fourth Proportional to 659,357.84, 989,442.84 and 259,930.64

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Solution

The fourth proportional to 659,357.84, 989,442.84 and 259,930.64 is: 390,056.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,357.84 : 989,442.84 = 259,930.64 : x
  2. Step 2: Convert to fraction form
    659,357.84/989,442.84 = 259,930.64/x
  3. Step 3: Cross multiply
    659,357.84x = 989,442.84 × 259,930.64
  4. Step 4: Simplify right side
    659,357.84x = 257,186,510,644.62
  5. Step 5: Solve for x
    x = 257,186,510,644.62/659,357.84
  6. Step 6: Final answer
    x = 390,056.04

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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.