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Finding the Fourth Proportional to 485,599.82, 670,353.39 and 345,988.42

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Solution

The fourth proportional to 485,599.82, 670,353.39 and 345,988.42 is: 477,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,599.82 : 670,353.39 = 345,988.42 : x
  2. Step 2: Convert to fraction form
    485,599.82/670,353.39 = 345,988.42/x
  3. Step 3: Cross multiply
    485,599.82x = 670,353.39 × 345,988.42
  4. Step 4: Simplify right side
    485,599.82x = 231,934,509,382.77
  5. Step 5: Solve for x
    x = 231,934,509,382.77/485,599.82
  6. Step 6: Final answer
    x = 477,624.79

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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.