Home / 1,189,079.64-1,642,292.64-782,996.76

Finding the Fourth Proportional to 1,189,079.64, 1,642,292.64 and 782,996.76

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Solution

The fourth proportional to 1,189,079.64, 1,642,292.64 and 782,996.76 is: 1,081,432.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,079.64 : 1,642,292.64 = 782,996.76 : x
  2. Step 2: Convert to fraction form
    1,189,079.64/1,642,292.64 = 782,996.76/x
  3. Step 3: Cross multiply
    1,189,079.64x = 1,642,292.64 × 782,996.76
  4. Step 4: Simplify right side
    1,189,079.64x = 1,285,909,816,091.85
  5. Step 5: Solve for x
    x = 1,285,909,816,091.85/1,189,079.64
  6. Step 6: Final answer
    x = 1,081,432.88

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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.