Home / 413,979.26-620,968.90-129,672.24

Finding the Fourth Proportional to 413,979.26, 620,968.90 and 129,672.24

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Solution

The fourth proportional to 413,979.26, 620,968.90 and 129,672.24 is: 194,508.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,979.26 : 620,968.90 = 129,672.24 : x
  2. Step 2: Convert to fraction form
    413,979.26/620,968.90 = 129,672.24/x
  3. Step 3: Cross multiply
    413,979.26x = 620,968.90 × 129,672.24
  4. Step 4: Simplify right side
    413,979.26x = 80,522,428,233.34
  5. Step 5: Solve for x
    x = 80,522,428,233.34/413,979.26
  6. Step 6: Final answer
    x = 194,508.36

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1.5x scale

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.