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Finding the Fourth Proportional to 412,951.20, 620,809.20 and 352,125.60

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Solution

The fourth proportional to 412,951.20, 620,809.20 and 352,125.60 is: 529,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,951.20 : 620,809.20 = 352,125.60 : x
  2. Step 2: Convert to fraction form
    412,951.20/620,809.20 = 352,125.60/x
  3. Step 3: Cross multiply
    412,951.20x = 620,809.20 × 352,125.60
  4. Step 4: Simplify right side
    412,951.20x = 218,602,812,035.52
  5. Step 5: Solve for x
    x = 218,602,812,035.52/412,951.20
  6. Step 6: Final answer
    x = 529,367.18

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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.