Home / 709,819.81-979,546.31-387,529.87

Finding the Fourth Proportional to 709,819.81, 979,546.31 and 387,529.87

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Solution

The fourth proportional to 709,819.81, 979,546.31 and 387,529.87 is: 534,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,819.81 : 979,546.31 = 387,529.87 : x
  2. Step 2: Convert to fraction form
    709,819.81/979,546.31 = 387,529.87/x
  3. Step 3: Cross multiply
    709,819.81x = 979,546.31 × 387,529.87
  4. Step 4: Simplify right side
    709,819.81x = 379,603,455,256.51
  5. Step 5: Solve for x
    x = 379,603,455,256.51/709,819.81
  6. Step 6: Final answer
    x = 534,788.48

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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.