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Finding the Fourth Proportional to 664,707.60, 996,040.80 and 495,433.80

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Solution

The fourth proportional to 664,707.60, 996,040.80 and 495,433.80 is: 742,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,707.60 : 996,040.80 = 495,433.80 : x
  2. Step 2: Convert to fraction form
    664,707.60/996,040.80 = 495,433.80/x
  3. Step 3: Cross multiply
    664,707.60x = 996,040.80 × 495,433.80
  4. Step 4: Simplify right side
    664,707.60x = 493,472,278,499.04
  5. Step 5: Solve for x
    x = 493,472,278,499.04/664,707.60
  6. Step 6: Final answer
    x = 742,390.01

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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.