Home / 787,112.60-1,180,280.70-331,620.68

Finding the Fourth Proportional to 787,112.60, 1,180,280.70 and 331,620.68

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Solution

The fourth proportional to 787,112.60, 1,180,280.70 and 331,620.68 is: 497,267.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,112.60 : 1,180,280.70 = 331,620.68 : x
  2. Step 2: Convert to fraction form
    787,112.60/1,180,280.70 = 331,620.68/x
  3. Step 3: Cross multiply
    787,112.60x = 1,180,280.70 × 331,620.68
  4. Step 4: Simplify right side
    787,112.60x = 391,405,488,324.88
  5. Step 5: Solve for x
    x = 391,405,488,324.88/787,112.60
  6. Step 6: Final answer
    x = 497,267.47

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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.