Home / 724,138.10-1,086,725.55-303,715.70

Finding the Fourth Proportional to 724,138.10, 1,086,725.55 and 303,715.70

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Solution

The fourth proportional to 724,138.10, 1,086,725.55 and 303,715.70 is: 455,790.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,138.10 : 1,086,725.55 = 303,715.70 : x
  2. Step 2: Convert to fraction form
    724,138.10/1,086,725.55 = 303,715.70/x
  3. Step 3: Cross multiply
    724,138.10x = 1,086,725.55 × 303,715.70
  4. Step 4: Simplify right side
    724,138.10x = 330,055,611,126.14
  5. Step 5: Solve for x
    x = 330,055,611,126.14/724,138.10
  6. Step 6: Final answer
    x = 455,790.98

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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.