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Finding the Fourth Proportional to 888,998.60, 1,334,081.10 and 509,918.60

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Solution

The fourth proportional to 888,998.60, 1,334,081.10 and 509,918.60 is: 765,212.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,998.60 : 1,334,081.10 = 509,918.60 : x
  2. Step 2: Convert to fraction form
    888,998.60/1,334,081.10 = 509,918.60/x
  3. Step 3: Cross multiply
    888,998.60x = 1,334,081.10 × 509,918.60
  4. Step 4: Simplify right side
    888,998.60x = 680,272,766,798.46
  5. Step 5: Solve for x
    x = 680,272,766,798.46/888,998.60
  6. Step 6: Final answer
    x = 765,212.42

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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.