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Finding the Fourth Proportional to 685,950.12, 946,440.18 and 395,650.44

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Solution

The fourth proportional to 685,950.12, 946,440.18 and 395,650.44 is: 545,898.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,950.12 : 946,440.18 = 395,650.44 : x
  2. Step 2: Convert to fraction form
    685,950.12/946,440.18 = 395,650.44/x
  3. Step 3: Cross multiply
    685,950.12x = 946,440.18 × 395,650.44
  4. Step 4: Simplify right side
    685,950.12x = 374,459,473,650.68
  5. Step 5: Solve for x
    x = 374,459,473,650.68/685,950.12
  6. Step 6: Final answer
    x = 545,898.98

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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.