Home / 684,741.20-1,027,111.80-419,020.70

Finding the Fourth Proportional to 684,741.20, 1,027,111.80 and 419,020.70

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Solution

The fourth proportional to 684,741.20, 1,027,111.80 and 419,020.70 is: 628,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,741.20 : 1,027,111.80 = 419,020.70 : x
  2. Step 2: Convert to fraction form
    684,741.20/1,027,111.80 = 419,020.70/x
  3. Step 3: Cross multiply
    684,741.20x = 1,027,111.80 × 419,020.70
  4. Step 4: Simplify right side
    684,741.20x = 430,381,105,414.26
  5. Step 5: Solve for x
    x = 430,381,105,414.26/684,741.20
  6. Step 6: Final answer
    x = 628,531.05

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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.