Home / 709,945.29-979,764.35-387,685.35

Finding the Fourth Proportional to 709,945.29, 979,764.35 and 387,685.35

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Solution

The fourth proportional to 709,945.29, 979,764.35 and 387,685.35 is: 535,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,945.29 : 979,764.35 = 387,685.35 : x
  2. Step 2: Convert to fraction form
    709,945.29/979,764.35 = 387,685.35/x
  3. Step 3: Cross multiply
    709,945.29x = 979,764.35 × 387,685.35
  4. Step 4: Simplify right side
    709,945.29x = 379,840,283,008.85
  5. Step 5: Solve for x
    x = 379,840,283,008.85/709,945.29
  6. Step 6: Final answer
    x = 535,027.54

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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.