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Finding the Fourth Proportional to 453,079, 679,620.66 and 120,655

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Solution

The fourth proportional to 453,079, 679,620.66 and 120,655 is: 180,983.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,079 : 679,620.66 = 120,655 : x
  2. Step 2: Convert to fraction form
    453,079/679,620.66 = 120,655/x
  3. Step 3: Cross multiply
    453,079x = 679,620.66 × 120,655
  4. Step 4: Simplify right side
    453,079x = 81,999,630,732.30
  5. Step 5: Solve for x
    x = 81,999,630,732.30/453,079
  6. Step 6: Final answer
    x = 180,983.08

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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.