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Finding the Fourth Proportional to 478,998.60, 661,062.30 and 275,076.24

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Solution

The fourth proportional to 478,998.60, 661,062.30 and 275,076.24 is: 379,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,998.60 : 661,062.30 = 275,076.24 : x
  2. Step 2: Convert to fraction form
    478,998.60/661,062.30 = 275,076.24/x
  3. Step 3: Cross multiply
    478,998.60x = 661,062.30 × 275,076.24
  4. Step 4: Simplify right side
    478,998.60x = 181,842,531,889.75
  5. Step 5: Solve for x
    x = 181,842,531,889.75/478,998.60
  6. Step 6: Final answer
    x = 379,630.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.