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Finding the Fourth Proportional to 850,978.60, 1,278,368.70 and 711,010.60

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Solution

The fourth proportional to 850,978.60, 1,278,368.70 and 711,010.60 is: 1,068,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,978.60 : 1,278,368.70 = 711,010.60 : x
  2. Step 2: Convert to fraction form
    850,978.60/1,278,368.70 = 711,010.60/x
  3. Step 3: Cross multiply
    850,978.60x = 1,278,368.70 × 711,010.60
  4. Step 4: Simplify right side
    850,978.60x = 908,933,696,408.22
  5. Step 5: Solve for x
    x = 908,933,696,408.22/850,978.60
  6. Step 6: Final answer
    x = 1,068,104.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.