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Finding the Fourth Proportional to 446,407.10, 616,218.44 and 310,519.88

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Solution

The fourth proportional to 446,407.10, 616,218.44 and 310,519.88 is: 428,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,407.10 : 616,218.44 = 310,519.88 : x
  2. Step 2: Convert to fraction form
    446,407.10/616,218.44 = 310,519.88/x
  3. Step 3: Cross multiply
    446,407.10x = 616,218.44 × 310,519.88
  4. Step 4: Simplify right side
    446,407.10x = 191,348,073,719.72
  5. Step 5: Solve for x
    x = 191,348,073,719.72/446,407.10
  6. Step 6: Final answer
    x = 428,640.30

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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.