Home / 724,321.90-1,086,871.65-303,640.30

Finding the Fourth Proportional to 724,321.90, 1,086,871.65 and 303,640.30

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Solution

The fourth proportional to 724,321.90, 1,086,871.65 and 303,640.30 is: 455,623.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,321.90 : 1,086,871.65 = 303,640.30 : x
  2. Step 2: Convert to fraction form
    724,321.90/1,086,871.65 = 303,640.30/x
  3. Step 3: Cross multiply
    724,321.90x = 1,086,871.65 × 303,640.30
  4. Step 4: Simplify right side
    724,321.90x = 330,018,033,867.50
  5. Step 5: Solve for x
    x = 330,018,033,867.50/724,321.90
  6. Step 6: Final answer
    x = 455,623.44

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Double scale
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Similar ratio
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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.