Home / 686,218.68-1,029,320.53-281,320.54

Finding the Fourth Proportional to 686,218.68, 1,029,320.53 and 281,320.54

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Solution

The fourth proportional to 686,218.68, 1,029,320.53 and 281,320.54 is: 421,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,218.68 : 1,029,320.53 = 281,320.54 : x
  2. Step 2: Convert to fraction form
    686,218.68/1,029,320.53 = 281,320.54/x
  3. Step 3: Cross multiply
    686,218.68x = 1,029,320.53 × 281,320.54
  4. Step 4: Simplify right side
    686,218.68x = 289,569,004,056.08
  5. Step 5: Solve for x
    x = 289,569,004,056.08/686,218.68
  6. Step 6: Final answer
    x = 421,977.73

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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.