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Finding the Fourth Proportional to 425,865.60, 637,469.46 and 313,672.50

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Solution

The fourth proportional to 425,865.60, 637,469.46 and 313,672.50 is: 469,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,865.60 : 637,469.46 = 313,672.50 : x
  2. Step 2: Convert to fraction form
    425,865.60/637,469.46 = 313,672.50/x
  3. Step 3: Cross multiply
    425,865.60x = 637,469.46 × 313,672.50
  4. Step 4: Simplify right side
    425,865.60x = 199,956,639,191.85
  5. Step 5: Solve for x
    x = 199,956,639,191.85/425,865.60
  6. Step 6: Final answer
    x = 469,529.92

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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.