Home / 684,129.60-1,026,194.40-664,446.60

Finding the Fourth Proportional to 684,129.60, 1,026,194.40 and 664,446.60

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Solution

The fourth proportional to 684,129.60, 1,026,194.40 and 664,446.60 is: 996,669.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,129.60 : 1,026,194.40 = 664,446.60 : x
  2. Step 2: Convert to fraction form
    684,129.60/1,026,194.40 = 664,446.60/x
  3. Step 3: Cross multiply
    684,129.60x = 1,026,194.40 × 664,446.60
  4. Step 4: Simplify right side
    684,129.60x = 681,851,380,019.04
  5. Step 5: Solve for x
    x = 681,851,380,019.04/684,129.60
  6. Step 6: Final answer
    x = 996,669.90

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Double scale
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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.