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Finding the Fourth Proportional to 459,187.60, 687,420.60 and 341,381.20

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Solution

The fourth proportional to 459,187.60, 687,420.60 and 341,381.20 is: 511,060.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,187.60 : 687,420.60 = 341,381.20 : x
  2. Step 2: Convert to fraction form
    459,187.60/687,420.60 = 341,381.20/x
  3. Step 3: Cross multiply
    459,187.60x = 687,420.60 × 341,381.20
  4. Step 4: Simplify right side
    459,187.60x = 234,672,469,332.72
  5. Step 5: Solve for x
    x = 234,672,469,332.72/459,187.60
  6. Step 6: Final answer
    x = 511,060.12

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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.