Home / 1,987,312.40-2,742,501.48-1,081,900.88

Finding the Fourth Proportional to 1,987,312.40, 2,742,501.48 and 1,081,900.88

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Solution

The fourth proportional to 1,987,312.40, 2,742,501.48 and 1,081,900.88 is: 1,493,028.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,312.40 : 2,742,501.48 = 1,081,900.88 : x
  2. Step 2: Convert to fraction form
    1,987,312.40/2,742,501.48 = 1,081,900.88/x
  3. Step 3: Cross multiply
    1,987,312.40x = 2,742,501.48 × 1,081,900.88
  4. Step 4: Simplify right side
    1,987,312.40x = 2,967,114,764,613.30
  5. Step 5: Solve for x
    x = 2,967,114,764,613.30/1,987,312.40
  6. Step 6: Final answer
    x = 1,493,028.86

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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.