Home / 521,514.39-719,664.98-320,271.51

Finding the Fourth Proportional to 521,514.39, 719,664.98 and 320,271.51

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Solution

The fourth proportional to 521,514.39, 719,664.98 and 320,271.51 is: 441,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,514.39 : 719,664.98 = 320,271.51 : x
  2. Step 2: Convert to fraction form
    521,514.39/719,664.98 = 320,271.51/x
  3. Step 3: Cross multiply
    521,514.39x = 719,664.98 × 320,271.51
  4. Step 4: Simplify right side
    521,514.39x = 230,488,188,237.36
  5. Step 5: Solve for x
    x = 230,488,188,237.36/521,514.39
  6. Step 6: Final answer
    x = 441,959.40

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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.