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Finding the Fourth Proportional to 478,483.68, 660,322.44 and 274,571.94

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Solution

The fourth proportional to 478,483.68, 660,322.44 and 274,571.94 is: 378,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,483.68 : 660,322.44 = 274,571.94 : x
  2. Step 2: Convert to fraction form
    478,483.68/660,322.44 = 274,571.94/x
  3. Step 3: Cross multiply
    478,483.68x = 660,322.44 × 274,571.94
  4. Step 4: Simplify right side
    478,483.68x = 181,306,013,376.33
  5. Step 5: Solve for x
    x = 181,306,013,376.33/478,483.68
  6. Step 6: Final answer
    x = 378,917.86

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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.