Home / 689,439.60-1,034,191.80-216,140.40

Finding the Fourth Proportional to 689,439.60, 1,034,191.80 and 216,140.40

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Solution

The fourth proportional to 689,439.60, 1,034,191.80 and 216,140.40 is: 324,220.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,439.60 : 1,034,191.80 = 216,140.40 : x
  2. Step 2: Convert to fraction form
    689,439.60/1,034,191.80 = 216,140.40/x
  3. Step 3: Cross multiply
    689,439.60x = 1,034,191.80 × 216,140.40
  4. Step 4: Simplify right side
    689,439.60x = 223,530,629,328.72
  5. Step 5: Solve for x
    x = 223,530,629,328.72/689,439.60
  6. Step 6: Final answer
    x = 324,220.76

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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.