Home / 1,291,410.96-1,782,122.76-718,449.36

Finding the Fourth Proportional to 1,291,410.96, 1,782,122.76 and 718,449.36

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Solution

The fourth proportional to 1,291,410.96, 1,782,122.76 and 718,449.36 is: 991,446.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,410.96 : 1,782,122.76 = 718,449.36 : x
  2. Step 2: Convert to fraction form
    1,291,410.96/1,782,122.76 = 718,449.36/x
  3. Step 3: Cross multiply
    1,291,410.96x = 1,782,122.76 × 718,449.36
  4. Step 4: Simplify right side
    1,291,410.96x = 1,280,364,956,363.43
  5. Step 5: Solve for x
    x = 1,280,364,956,363.43/1,291,410.96
  6. Step 6: Final answer
    x = 991,446.56

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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.