Home / 668,000.80-1,002,001.20-628,634.80

Finding the Fourth Proportional to 668,000.80, 1,002,001.20 and 628,634.80

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Solution

The fourth proportional to 668,000.80, 1,002,001.20 and 628,634.80 is: 942,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,000.80 : 1,002,001.20 = 628,634.80 : x
  2. Step 2: Convert to fraction form
    668,000.80/1,002,001.20 = 628,634.80/x
  3. Step 3: Cross multiply
    668,000.80x = 1,002,001.20 × 628,634.80
  4. Step 4: Simplify right side
    668,000.80x = 629,892,823,961.76
  5. Step 5: Solve for x
    x = 629,892,823,961.76/668,000.80
  6. Step 6: Final answer
    x = 942,952.20

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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.