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Finding the Fourth Proportional to 478,876.68, 660,162.90 and 376,724.58

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Solution

The fourth proportional to 478,876.68, 660,162.90 and 376,724.58 is: 519,339.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,876.68 : 660,162.90 = 376,724.58 : x
  2. Step 2: Convert to fraction form
    478,876.68/660,162.90 = 376,724.58/x
  3. Step 3: Cross multiply
    478,876.68x = 660,162.90 × 376,724.58
  4. Step 4: Simplify right side
    478,876.68x = 248,699,591,234.08
  5. Step 5: Solve for x
    x = 248,699,591,234.08/478,876.68
  6. Step 6: Final answer
    x = 519,339.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.