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Finding the Fourth Proportional to 521,769.60, 720,057.60 and 330,739.20

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Solution

The fourth proportional to 521,769.60, 720,057.60 and 330,739.20 is: 456,429.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,769.60 : 720,057.60 = 330,739.20 : x
  2. Step 2: Convert to fraction form
    521,769.60/720,057.60 = 330,739.20/x
  3. Step 3: Cross multiply
    521,769.60x = 720,057.60 × 330,739.20
  4. Step 4: Simplify right side
    521,769.60x = 238,151,274,577.92
  5. Step 5: Solve for x
    x = 238,151,274,577.92/521,769.60
  6. Step 6: Final answer
    x = 456,429.95

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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.