Home / 878,714.08-1,318,189.20-309,961.60

Finding the Fourth Proportional to 878,714.08, 1,318,189.20 and 309,961.60

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Solution

The fourth proportional to 878,714.08, 1,318,189.20 and 309,961.60 is: 464,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,714.08 : 1,318,189.20 = 309,961.60 : x
  2. Step 2: Convert to fraction form
    878,714.08/1,318,189.20 = 309,961.60/x
  3. Step 3: Cross multiply
    878,714.08x = 1,318,189.20 × 309,961.60
  4. Step 4: Simplify right side
    878,714.08x = 408,588,033,534.72
  5. Step 5: Solve for x
    x = 408,588,033,534.72/878,714.08
  6. Step 6: Final answer
    x = 464,984.05

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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.