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Finding the Fourth Proportional to 455,959.64, 628,897.96 and 320,023.92

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Solution

The fourth proportional to 455,959.64, 628,897.96 and 320,023.92 is: 441,403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,959.64 : 628,897.96 = 320,023.92 : x
  2. Step 2: Convert to fraction form
    455,959.64/628,897.96 = 320,023.92/x
  3. Step 3: Cross multiply
    455,959.64x = 628,897.96 × 320,023.92
  4. Step 4: Simplify right side
    455,959.64x = 201,262,390,439.20
  5. Step 5: Solve for x
    x = 201,262,390,439.20/455,959.64
  6. Step 6: Final answer
    x = 441,403.96

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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.