Home / 1,270,885.20-1,906,327.80-429,424.80

Finding the Fourth Proportional to 1,270,885.20, 1,906,327.80 and 429,424.80

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Solution

The fourth proportional to 1,270,885.20, 1,906,327.80 and 429,424.80 is: 644,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,885.20 : 1,906,327.80 = 429,424.80 : x
  2. Step 2: Convert to fraction form
    1,270,885.20/1,906,327.80 = 429,424.80/x
  3. Step 3: Cross multiply
    1,270,885.20x = 1,906,327.80 × 429,424.80
  4. Step 4: Simplify right side
    1,270,885.20x = 818,624,434,249.44
  5. Step 5: Solve for x
    x = 818,624,434,249.44/1,270,885.20
  6. Step 6: Final answer
    x = 644,137.20

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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.