Home / 919,513.64-1,378,826.22-320,460.68

Finding the Fourth Proportional to 919,513.64, 1,378,826.22 and 320,460.68

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Solution

The fourth proportional to 919,513.64, 1,378,826.22 and 320,460.68 is: 480,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,513.64 : 1,378,826.22 = 320,460.68 : x
  2. Step 2: Convert to fraction form
    919,513.64/1,378,826.22 = 320,460.68/x
  3. Step 3: Cross multiply
    919,513.64x = 1,378,826.22 × 320,460.68
  4. Step 4: Simplify right side
    919,513.64x = 441,859,588,063.03
  5. Step 5: Solve for x
    x = 441,859,588,063.03/919,513.64
  6. Step 6: Final answer
    x = 480,536.20

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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.