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Finding the Fourth Proportional to 422,465.76, 632,425.59 and 272,407.59

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Solution

The fourth proportional to 422,465.76, 632,425.59 and 272,407.59 is: 407,790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,465.76 : 632,425.59 = 272,407.59 : x
  2. Step 2: Convert to fraction form
    422,465.76/632,425.59 = 272,407.59/x
  3. Step 3: Cross multiply
    422,465.76x = 632,425.59 × 272,407.59
  4. Step 4: Simplify right side
    422,465.76x = 172,277,530,826.23
  5. Step 5: Solve for x
    x = 172,277,530,826.23/422,465.76
  6. Step 6: Final answer
    x = 407,790.52

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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.