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Finding the Fourth Proportional to 478,837.72, 660,790.74 and 274,893.52

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Solution

The fourth proportional to 478,837.72, 660,790.74 and 274,893.52 is: 379,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,837.72 : 660,790.74 = 274,893.52 : x
  2. Step 2: Convert to fraction form
    478,837.72/660,790.74 = 274,893.52/x
  3. Step 3: Cross multiply
    478,837.72x = 660,790.74 × 274,893.52
  4. Step 4: Simplify right side
    478,837.72x = 181,647,092,502.01
  5. Step 5: Solve for x
    x = 181,647,092,502.01/478,837.72
  6. Step 6: Final answer
    x = 379,350.01

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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.