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Finding the Fourth Proportional to 543,397.60, 815,096.40 and 354,440.80

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Solution

The fourth proportional to 543,397.60, 815,096.40 and 354,440.80 is: 531,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,397.60 : 815,096.40 = 354,440.80 : x
  2. Step 2: Convert to fraction form
    543,397.60/815,096.40 = 354,440.80/x
  3. Step 3: Cross multiply
    543,397.60x = 815,096.40 × 354,440.80
  4. Step 4: Simplify right side
    543,397.60x = 288,903,420,093.12
  5. Step 5: Solve for x
    x = 288,903,420,093.12/543,397.60
  6. Step 6: Final answer
    x = 531,661.20

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Similar ratio
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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.