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Finding the Fourth Proportional to 763,759.68, 1,054,005 and 419,600.04

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Solution

The fourth proportional to 763,759.68, 1,054,005 and 419,600.04 is: 579,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,759.68 : 1,054,005 = 419,600.04 : x
  2. Step 2: Convert to fraction form
    763,759.68/1,054,005 = 419,600.04/x
  3. Step 3: Cross multiply
    763,759.68x = 1,054,005 × 419,600.04
  4. Step 4: Simplify right side
    763,759.68x = 442,260,540,160.20
  5. Step 5: Solve for x
    x = 442,260,540,160.20/763,759.68
  6. Step 6: Final answer
    x = 579,057.20

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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.