Home / 1,891,140-2,609,773.20-1,212,076.80

Finding the Fourth Proportional to 1,891,140, 2,609,773.20 and 1,212,076.80

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Solution

The fourth proportional to 1,891,140, 2,609,773.20 and 1,212,076.80 is: 1,672,665.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,140 : 2,609,773.20 = 1,212,076.80 : x
  2. Step 2: Convert to fraction form
    1,891,140/2,609,773.20 = 1,212,076.80/x
  3. Step 3: Cross multiply
    1,891,140x = 2,609,773.20 × 1,212,076.80
  4. Step 4: Simplify right side
    1,891,140x = 3,163,245,548,981.76
  5. Step 5: Solve for x
    x = 3,163,245,548,981.76/1,891,140
  6. Step 6: Final answer
    x = 1,672,665.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.