Home / 385,321.60-577,982.40-320,003.20

Finding the Fourth Proportional to 385,321.60, 577,982.40 and 320,003.20

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Solution

The fourth proportional to 385,321.60, 577,982.40 and 320,003.20 is: 480,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,321.60 : 577,982.40 = 320,003.20 : x
  2. Step 2: Convert to fraction form
    385,321.60/577,982.40 = 320,003.20/x
  3. Step 3: Cross multiply
    385,321.60x = 577,982.40 × 320,003.20
  4. Step 4: Simplify right side
    385,321.60x = 184,956,217,543.68
  5. Step 5: Solve for x
    x = 184,956,217,543.68/385,321.60
  6. Step 6: Final answer
    x = 480,004.80

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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.