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Finding the Fourth Proportional to 432,372.60, 646,809.30 and 379,884.60

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Solution

The fourth proportional to 432,372.60, 646,809.30 and 379,884.60 is: 568,289.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,372.60 : 646,809.30 = 379,884.60 : x
  2. Step 2: Convert to fraction form
    432,372.60/646,809.30 = 379,884.60/x
  3. Step 3: Cross multiply
    432,372.60x = 646,809.30 × 379,884.60
  4. Step 4: Simplify right side
    432,372.60x = 245,712,892,206.78
  5. Step 5: Solve for x
    x = 245,712,892,206.78/432,372.60
  6. Step 6: Final answer
    x = 568,289.69

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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.