Home / 647,402.28-971,245.66-198,157.78

Finding the Fourth Proportional to 647,402.28, 971,245.66 and 198,157.78

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Solution

The fourth proportional to 647,402.28, 971,245.66 and 198,157.78 is: 297,280.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,402.28 : 971,245.66 = 198,157.78 : x
  2. Step 2: Convert to fraction form
    647,402.28/971,245.66 = 198,157.78/x
  3. Step 3: Cross multiply
    647,402.28x = 971,245.66 × 198,157.78
  4. Step 4: Simplify right side
    647,402.28x = 192,459,883,820.24
  5. Step 5: Solve for x
    x = 192,459,883,820.24/647,402.28
  6. Step 6: Final answer
    x = 297,280.21

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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.