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Finding the Fourth Proportional to 664,708.60, 996,042.30 and 495,434.80

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Solution

The fourth proportional to 664,708.60, 996,042.30 and 495,434.80 is: 742,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,708.60 : 996,042.30 = 495,434.80 : x
  2. Step 2: Convert to fraction form
    664,708.60/996,042.30 = 495,434.80/x
  3. Step 3: Cross multiply
    664,708.60x = 996,042.30 × 495,434.80
  4. Step 4: Simplify right side
    664,708.60x = 493,474,017,692.04
  5. Step 5: Solve for x
    x = 493,474,017,692.04/664,708.60
  6. Step 6: Final answer
    x = 742,391.50

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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.