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Finding the Fourth Proportional to 490,829.60, 735,207.60 and 407,885.60

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Solution

The fourth proportional to 490,829.60, 735,207.60 and 407,885.60 is: 610,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,829.60 : 735,207.60 = 407,885.60 : x
  2. Step 2: Convert to fraction form
    490,829.60/735,207.60 = 407,885.60/x
  3. Step 3: Cross multiply
    490,829.60x = 735,207.60 × 407,885.60
  4. Step 4: Simplify right side
    490,829.60x = 299,880,593,050.56
  5. Step 5: Solve for x
    x = 299,880,593,050.56/490,829.60
  6. Step 6: Final answer
    x = 610,966.81

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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.