Home / 1,091,605.40-1,505,393.70-862,709.52

Finding the Fourth Proportional to 1,091,605.40, 1,505,393.70 and 862,709.52

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Solution

The fourth proportional to 1,091,605.40, 1,505,393.70 and 862,709.52 is: 1,189,731.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,605.40 : 1,505,393.70 = 862,709.52 : x
  2. Step 2: Convert to fraction form
    1,091,605.40/1,505,393.70 = 862,709.52/x
  3. Step 3: Cross multiply
    1,091,605.40x = 1,505,393.70 × 862,709.52
  4. Step 4: Simplify right side
    1,091,605.40x = 1,298,717,476,338.02
  5. Step 5: Solve for x
    x = 1,298,717,476,338.02/1,091,605.40
  6. Step 6: Final answer
    x = 1,189,731.63

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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.