Home / 658,176.30-987,628.75-321,219.74

Finding the Fourth Proportional to 658,176.30, 987,628.75 and 321,219.74

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Solution

The fourth proportional to 658,176.30, 987,628.75 and 321,219.74 is: 482,007.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,176.30 : 987,628.75 = 321,219.74 : x
  2. Step 2: Convert to fraction form
    658,176.30/987,628.75 = 321,219.74/x
  3. Step 3: Cross multiply
    658,176.30x = 987,628.75 × 321,219.74
  4. Step 4: Simplify right side
    658,176.30x = 317,245,850,291.53
  5. Step 5: Solve for x
    x = 317,245,850,291.53/658,176.30
  6. Step 6: Final answer
    x = 482,007.40

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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.