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Finding the Fourth Proportional to 393,663.60, 589,620.60 and 304,628.40

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Solution

The fourth proportional to 393,663.60, 589,620.60 and 304,628.40 is: 456,265.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,663.60 : 589,620.60 = 304,628.40 : x
  2. Step 2: Convert to fraction form
    393,663.60/589,620.60 = 304,628.40/x
  3. Step 3: Cross multiply
    393,663.60x = 589,620.60 × 304,628.40
  4. Step 4: Simplify right side
    393,663.60x = 179,615,179,985.04
  5. Step 5: Solve for x
    x = 179,615,179,985.04/393,663.60
  6. Step 6: Final answer
    x = 456,265.65

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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.