Home / 709,786.43-979,500.29-387,496.54

Finding the Fourth Proportional to 709,786.43, 979,500.29 and 387,496.54

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Solution

The fourth proportional to 709,786.43, 979,500.29 and 387,496.54 is: 534,742.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,786.43 : 979,500.29 = 387,496.54 : x
  2. Step 2: Convert to fraction form
    709,786.43/979,500.29 = 387,496.54/x
  3. Step 3: Cross multiply
    709,786.43x = 979,500.29 × 387,496.54
  4. Step 4: Simplify right side
    709,786.43x = 379,552,973,304.00
  5. Step 5: Solve for x
    x = 379,552,973,304.00/709,786.43
  6. Step 6: Final answer
    x = 534,742.50

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Double scale
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1.5x scale

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.