Home / 686,221.34-1,029,324.51-281,323.19

Finding the Fourth Proportional to 686,221.34, 1,029,324.51 and 281,323.19

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Solution

The fourth proportional to 686,221.34, 1,029,324.51 and 281,323.19 is: 421,981.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,221.34 : 1,029,324.51 = 281,323.19 : x
  2. Step 2: Convert to fraction form
    686,221.34/1,029,324.51 = 281,323.19/x
  3. Step 3: Cross multiply
    686,221.34x = 1,029,324.51 × 281,323.19
  4. Step 4: Simplify right side
    686,221.34x = 289,572,854,698.39
  5. Step 5: Solve for x
    x = 289,572,854,698.39/686,221.34
  6. Step 6: Final answer
    x = 421,981.71

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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.