Home / 1,139,719.70-1,709,579.55-1,087,231.70

Finding the Fourth Proportional to 1,139,719.70, 1,709,579.55 and 1,087,231.70

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Solution

The fourth proportional to 1,139,719.70, 1,709,579.55 and 1,087,231.70 is: 1,630,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,719.70 : 1,709,579.55 = 1,087,231.70 : x
  2. Step 2: Convert to fraction form
    1,139,719.70/1,709,579.55 = 1,087,231.70/x
  3. Step 3: Cross multiply
    1,139,719.70x = 1,709,579.55 × 1,087,231.70
  4. Step 4: Simplify right side
    1,139,719.70x = 1,858,709,080,431.74
  5. Step 5: Solve for x
    x = 1,858,709,080,431.74/1,139,719.70
  6. Step 6: Final answer
    x = 1,630,847.55

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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.