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Finding the Fourth Proportional to 656,644.80, 984,967.20 and 376,708.80

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Solution

The fourth proportional to 656,644.80, 984,967.20 and 376,708.80 is: 565,063.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,644.80 : 984,967.20 = 376,708.80 : x
  2. Step 2: Convert to fraction form
    656,644.80/984,967.20 = 376,708.80/x
  3. Step 3: Cross multiply
    656,644.80x = 984,967.20 × 376,708.80
  4. Step 4: Simplify right side
    656,644.80x = 371,045,811,951.36
  5. Step 5: Solve for x
    x = 371,045,811,951.36/656,644.80
  6. Step 6: Final answer
    x = 565,063.20

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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.