Home / 724,340.70-1,086,505.65-218,900.70

Finding the Fourth Proportional to 724,340.70, 1,086,505.65 and 218,900.70

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Solution

The fourth proportional to 724,340.70, 1,086,505.65 and 218,900.70 is: 328,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,340.70 : 1,086,505.65 = 218,900.70 : x
  2. Step 2: Convert to fraction form
    724,340.70/1,086,505.65 = 218,900.70/x
  3. Step 3: Cross multiply
    724,340.70x = 1,086,505.65 × 218,900.70
  4. Step 4: Simplify right side
    724,340.70x = 237,836,847,338.96
  5. Step 5: Solve for x
    x = 237,836,847,338.96/724,340.70
  6. Step 6: Final answer
    x = 328,349.42

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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.