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Finding the Fourth Proportional to 478,833.70, 718,250.55 and 419,784.70

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Solution

The fourth proportional to 478,833.70, 718,250.55 and 419,784.70 is: 629,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,833.70 : 718,250.55 = 419,784.70 : x
  2. Step 2: Convert to fraction form
    478,833.70/718,250.55 = 419,784.70/x
  3. Step 3: Cross multiply
    478,833.70x = 718,250.55 × 419,784.70
  4. Step 4: Simplify right side
    478,833.70x = 301,510,591,656.59
  5. Step 5: Solve for x
    x = 301,510,591,656.59/478,833.70
  6. Step 6: Final answer
    x = 629,677.05

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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.