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Finding the Fourth Proportional to 436,755.29, 651,213.72 and 428,783.67

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Solution

The fourth proportional to 436,755.29, 651,213.72 and 428,783.67 is: 639,327.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,755.29 : 651,213.72 = 428,783.67 : x
  2. Step 2: Convert to fraction form
    436,755.29/651,213.72 = 428,783.67/x
  3. Step 3: Cross multiply
    436,755.29x = 651,213.72 × 428,783.67
  4. Step 4: Simplify right side
    436,755.29x = 279,229,808,815.95
  5. Step 5: Solve for x
    x = 279,229,808,815.95/436,755.29
  6. Step 6: Final answer
    x = 639,327.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.