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Finding the Fourth Proportional to 478,124.64, 718,410.96 and 360,900

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Solution

The fourth proportional to 478,124.64, 718,410.96 and 360,900 is: 542,273.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,124.64 : 718,410.96 = 360,900 : x
  2. Step 2: Convert to fraction form
    478,124.64/718,410.96 = 360,900/x
  3. Step 3: Cross multiply
    478,124.64x = 718,410.96 × 360,900
  4. Step 4: Simplify right side
    478,124.64x = 259,274,515,464
  5. Step 5: Solve for x
    x = 259,274,515,464/478,124.64
  6. Step 6: Final answer
    x = 542,273.90

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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.