Home / 853,070.72-1,279,409.24-320,645.58

Finding the Fourth Proportional to 853,070.72, 1,279,409.24 and 320,645.58

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Solution

The fourth proportional to 853,070.72, 1,279,409.24 and 320,645.58 is: 480,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,070.72 : 1,279,409.24 = 320,645.58 : x
  2. Step 2: Convert to fraction form
    853,070.72/1,279,409.24 = 320,645.58/x
  3. Step 3: Cross multiply
    853,070.72x = 1,279,409.24 × 320,645.58
  4. Step 4: Simplify right side
    853,070.72x = 410,236,917,817.16
  5. Step 5: Solve for x
    x = 410,236,917,817.16/853,070.72
  6. Step 6: Final answer
    x = 480,894.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.