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Finding the Fourth Proportional to 518,902.40, 778,499.40 and 252,671.60

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Solution

The fourth proportional to 518,902.40, 778,499.40 and 252,671.60 is: 379,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,902.40 : 778,499.40 = 252,671.60 : x
  2. Step 2: Convert to fraction form
    518,902.40/778,499.40 = 252,671.60/x
  3. Step 3: Cross multiply
    518,902.40x = 778,499.40 × 252,671.60
  4. Step 4: Simplify right side
    518,902.40x = 196,704,688,997.04
  5. Step 5: Solve for x
    x = 196,704,688,997.04/518,902.40
  6. Step 6: Final answer
    x = 379,078.40

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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.