Home / 1,320,446.49-1,979,481.47-478,407.75

Finding the Fourth Proportional to 1,320,446.49, 1,979,481.47 and 478,407.75

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Solution

The fourth proportional to 1,320,446.49, 1,979,481.47 and 478,407.75 is: 717,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,446.49 : 1,979,481.47 = 478,407.75 : x
  2. Step 2: Convert to fraction form
    1,320,446.49/1,979,481.47 = 478,407.75/x
  3. Step 3: Cross multiply
    1,320,446.49x = 1,979,481.47 × 478,407.75
  4. Step 4: Simplify right side
    1,320,446.49x = 946,999,273,837.35
  5. Step 5: Solve for x
    x = 946,999,273,837.35/1,320,446.49
  6. Step 6: Final answer
    x = 717,181.11

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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.