Home / 709,785.43-979,498.91-387,495.54

Finding the Fourth Proportional to 709,785.43, 979,498.91 and 387,495.54

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Solution

The fourth proportional to 709,785.43, 979,498.91 and 387,495.54 is: 534,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,785.43 : 979,498.91 = 387,495.54 : x
  2. Step 2: Convert to fraction form
    709,785.43/979,498.91 = 387,495.54/x
  3. Step 3: Cross multiply
    709,785.43x = 979,498.91 × 387,495.54
  4. Step 4: Simplify right side
    709,785.43x = 379,551,460,028.60
  5. Step 5: Solve for x
    x = 379,551,460,028.60/709,785.43
  6. Step 6: Final answer
    x = 534,741.13

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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.