Home / 678,319.92-936,246.60-406,548.72

Finding the Fourth Proportional to 678,319.92, 936,246.60 and 406,548.72

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Solution

The fourth proportional to 678,319.92, 936,246.60 and 406,548.72 is: 561,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,319.92 : 936,246.60 = 406,548.72 : x
  2. Step 2: Convert to fraction form
    678,319.92/936,246.60 = 406,548.72/x
  3. Step 3: Cross multiply
    678,319.92x = 936,246.60 × 406,548.72
  4. Step 4: Simplify right side
    678,319.92x = 380,629,856,834.35
  5. Step 5: Solve for x
    x = 380,629,856,834.35/678,319.92
  6. Step 6: Final answer
    x = 561,136.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.