Home / 607,979.57-911,967.53-427,321.22

Finding the Fourth Proportional to 607,979.57, 911,967.53 and 427,321.22

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Solution

The fourth proportional to 607,979.57, 911,967.53 and 427,321.22 is: 640,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,979.57 : 911,967.53 = 427,321.22 : x
  2. Step 2: Convert to fraction form
    607,979.57/911,967.53 = 427,321.22/x
  3. Step 3: Cross multiply
    607,979.57x = 911,967.53 × 427,321.22
  4. Step 4: Simplify right side
    607,979.57x = 389,703,070,823.54
  5. Step 5: Solve for x
    x = 389,703,070,823.54/607,979.57
  6. Step 6: Final answer
    x = 640,980.54

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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.