Home / 409,823.20-615,195.60-316,741.60

Finding the Fourth Proportional to 409,823.20, 615,195.60 and 316,741.60

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Solution

The fourth proportional to 409,823.20, 615,195.60 and 316,741.60 is: 475,468.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,823.20 : 615,195.60 = 316,741.60 : x
  2. Step 2: Convert to fraction form
    409,823.20/615,195.60 = 316,741.60/x
  3. Step 3: Cross multiply
    409,823.20x = 615,195.60 × 316,741.60
  4. Step 4: Simplify right side
    409,823.20x = 194,858,038,656.96
  5. Step 5: Solve for x
    x = 194,858,038,656.96/409,823.20
  6. Step 6: Final answer
    x = 475,468.54

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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.