Home / 1,270,900.20-1,906,350.30-429,439.80

Finding the Fourth Proportional to 1,270,900.20, 1,906,350.30 and 429,439.80

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Solution

The fourth proportional to 1,270,900.20, 1,906,350.30 and 429,439.80 is: 644,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,900.20 : 1,906,350.30 = 429,439.80 : x
  2. Step 2: Convert to fraction form
    1,270,900.20/1,906,350.30 = 429,439.80/x
  3. Step 3: Cross multiply
    1,270,900.20x = 1,906,350.30 × 429,439.80
  4. Step 4: Simplify right side
    1,270,900.20x = 818,662,691,561.94
  5. Step 5: Solve for x
    x = 818,662,691,561.94/1,270,900.20
  6. Step 6: Final answer
    x = 644,159.70

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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.