Home / 686,220.93-1,029,323.90-281,322.79

Finding the Fourth Proportional to 686,220.93, 1,029,323.90 and 281,322.79

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Solution

The fourth proportional to 686,220.93, 1,029,323.90 and 281,322.79 is: 421,981.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,220.93 : 1,029,323.90 = 281,322.79 : x
  2. Step 2: Convert to fraction form
    686,220.93/1,029,323.90 = 281,322.79/x
  3. Step 3: Cross multiply
    686,220.93x = 1,029,323.90 × 281,322.79
  4. Step 4: Simplify right side
    686,220.93x = 289,572,269,491.68
  5. Step 5: Solve for x
    x = 289,572,269,491.68/686,220.93
  6. Step 6: Final answer
    x = 421,981.11

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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.