Home / 1,200,689.88-1,800,140.58-727,261.08

Finding the Fourth Proportional to 1,200,689.88, 1,800,140.58 and 727,261.08

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Solution

The fourth proportional to 1,200,689.88, 1,800,140.58 and 727,261.08 is: 1,090,349.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,689.88 : 1,800,140.58 = 727,261.08 : x
  2. Step 2: Convert to fraction form
    1,200,689.88/1,800,140.58 = 727,261.08/x
  3. Step 3: Cross multiply
    1,200,689.88x = 1,800,140.58 × 727,261.08
  4. Step 4: Simplify right side
    1,200,689.88x = 1,309,172,182,362.63
  5. Step 5: Solve for x
    x = 1,309,172,182,362.63/1,200,689.88
  6. Step 6: Final answer
    x = 1,090,349.98

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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.