Home / 763,855.29-1,054,138.01-419,712.75

Finding the Fourth Proportional to 763,855.29, 1,054,138.01 and 419,712.75

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Solution

The fourth proportional to 763,855.29, 1,054,138.01 and 419,712.75 is: 579,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,855.29 : 1,054,138.01 = 419,712.75 : x
  2. Step 2: Convert to fraction form
    763,855.29/1,054,138.01 = 419,712.75/x
  3. Step 3: Cross multiply
    763,855.29x = 1,054,138.01 × 419,712.75
  4. Step 4: Simplify right side
    763,855.29x = 442,435,160,958.06
  5. Step 5: Solve for x
    x = 442,435,160,958.06/763,855.29
  6. Step 6: Final answer
    x = 579,213.32

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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.