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Finding the Fourth Proportional to 482,741.40, 724,241.70 and 430,512.60

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Solution

The fourth proportional to 482,741.40, 724,241.70 and 430,512.60 is: 645,884.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,741.40 : 724,241.70 = 430,512.60 : x
  2. Step 2: Convert to fraction form
    482,741.40/724,241.70 = 430,512.60/x
  3. Step 3: Cross multiply
    482,741.40x = 724,241.70 × 430,512.60
  4. Step 4: Simplify right side
    482,741.40x = 311,795,177,295.42
  5. Step 5: Solve for x
    x = 311,795,177,295.42/482,741.40
  6. Step 6: Final answer
    x = 645,884.48

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1.5x scale

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.