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Finding the Fourth Proportional to 491,812.80, 737,719.20 and 488,313.60

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Solution

The fourth proportional to 491,812.80, 737,719.20 and 488,313.60 is: 732,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,812.80 : 737,719.20 = 488,313.60 : x
  2. Step 2: Convert to fraction form
    491,812.80/737,719.20 = 488,313.60/x
  3. Step 3: Cross multiply
    491,812.80x = 737,719.20 × 488,313.60
  4. Step 4: Simplify right side
    491,812.80x = 360,238,318,341.12
  5. Step 5: Solve for x
    x = 360,238,318,341.12/491,812.80
  6. Step 6: Final answer
    x = 732,470.40

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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.