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Finding the Fourth Proportional to 443,999.80, 665,999.70 and 325,901.80

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Solution

The fourth proportional to 443,999.80, 665,999.70 and 325,901.80 is: 488,852.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,999.80 : 665,999.70 = 325,901.80 : x
  2. Step 2: Convert to fraction form
    443,999.80/665,999.70 = 325,901.80/x
  3. Step 3: Cross multiply
    443,999.80x = 665,999.70 × 325,901.80
  4. Step 4: Simplify right side
    443,999.80x = 217,050,501,029.46
  5. Step 5: Solve for x
    x = 217,050,501,029.46/443,999.80
  6. Step 6: Final answer
    x = 488,852.70

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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.