Home / 1,275,927.20-1,913,890.80-1,213,719.20

Finding the Fourth Proportional to 1,275,927.20, 1,913,890.80 and 1,213,719.20

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Solution

The fourth proportional to 1,275,927.20, 1,913,890.80 and 1,213,719.20 is: 1,820,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,927.20 : 1,913,890.80 = 1,213,719.20 : x
  2. Step 2: Convert to fraction form
    1,275,927.20/1,913,890.80 = 1,213,719.20/x
  3. Step 3: Cross multiply
    1,275,927.20x = 1,913,890.80 × 1,213,719.20
  4. Step 4: Simplify right side
    1,275,927.20x = 2,322,926,010,663.36
  5. Step 5: Solve for x
    x = 2,322,926,010,663.36/1,275,927.20
  6. Step 6: Final answer
    x = 1,820,578.80

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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.