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Finding the Fourth Proportional to 606,978.60, 910,832.40 and 251,955.60

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Solution

The fourth proportional to 606,978.60, 910,832.40 and 251,955.60 is: 378,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,978.60 : 910,832.40 = 251,955.60 : x
  2. Step 2: Convert to fraction form
    606,978.60/910,832.40 = 251,955.60/x
  3. Step 3: Cross multiply
    606,978.60x = 910,832.40 × 251,955.60
  4. Step 4: Simplify right side
    606,978.60x = 229,489,323,841.44
  5. Step 5: Solve for x
    x = 229,489,323,841.44/606,978.60
  6. Step 6: Final answer
    x = 378,084.70

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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.