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Finding the Fourth Proportional to 529,578.40, 730,815.20 and 300,179.04

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Solution

The fourth proportional to 529,578.40, 730,815.20 and 300,179.04 is: 414,245.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,578.40 : 730,815.20 = 300,179.04 : x
  2. Step 2: Convert to fraction form
    529,578.40/730,815.20 = 300,179.04/x
  3. Step 3: Cross multiply
    529,578.40x = 730,815.20 × 300,179.04
  4. Step 4: Simplify right side
    529,578.40x = 219,375,405,153.41
  5. Step 5: Solve for x
    x = 219,375,405,153.41/529,578.40
  6. Step 6: Final answer
    x = 414,245.38

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1.5x scale

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.