Home / 670,495.70-1,005,529.71-221,132.81

Finding the Fourth Proportional to 670,495.70, 1,005,529.71 and 221,132.81

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Solution

The fourth proportional to 670,495.70, 1,005,529.71 and 221,132.81 is: 331,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,495.70 : 1,005,529.71 = 221,132.81 : x
  2. Step 2: Convert to fraction form
    670,495.70/1,005,529.71 = 221,132.81/x
  3. Step 3: Cross multiply
    670,495.70x = 1,005,529.71 × 221,132.81
  4. Step 4: Simplify right side
    670,495.70x = 222,355,610,310.79
  5. Step 5: Solve for x
    x = 222,355,610,310.79/670,495.70
  6. Step 6: Final answer
    x = 331,628.69

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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.