Home / 684,723.70-1,027,085.55-419,003.20

Finding the Fourth Proportional to 684,723.70, 1,027,085.55 and 419,003.20

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Solution

The fourth proportional to 684,723.70, 1,027,085.55 and 419,003.20 is: 628,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,723.70 : 1,027,085.55 = 419,003.20 : x
  2. Step 2: Convert to fraction form
    684,723.70/1,027,085.55 = 419,003.20/x
  3. Step 3: Cross multiply
    684,723.70x = 1,027,085.55 × 419,003.20
  4. Step 4: Simplify right side
    684,723.70x = 430,352,132,123.76
  5. Step 5: Solve for x
    x = 430,352,132,123.76/684,723.70
  6. Step 6: Final answer
    x = 628,504.80

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1.5x scale

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.