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Finding the Fourth Proportional to 404,964.20, 607,446.30 and 399,059.30

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Solution

The fourth proportional to 404,964.20, 607,446.30 and 399,059.30 is: 598,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,964.20 : 607,446.30 = 399,059.30 : x
  2. Step 2: Convert to fraction form
    404,964.20/607,446.30 = 399,059.30/x
  3. Step 3: Cross multiply
    404,964.20x = 607,446.30 × 399,059.30
  4. Step 4: Simplify right side
    404,964.20x = 242,407,095,265.59
  5. Step 5: Solve for x
    x = 242,407,095,265.59/404,964.20
  6. Step 6: Final answer
    x = 598,588.95

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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.