Home / 1,100,687.52-1,651,195.32-390,656.12

Finding the Fourth Proportional to 1,100,687.52, 1,651,195.32 and 390,656.12

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Solution

The fourth proportional to 1,100,687.52, 1,651,195.32 and 390,656.12 is: 586,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,687.52 : 1,651,195.32 = 390,656.12 : x
  2. Step 2: Convert to fraction form
    1,100,687.52/1,651,195.32 = 390,656.12/x
  3. Step 3: Cross multiply
    1,100,687.52x = 1,651,195.32 × 390,656.12
  4. Step 4: Simplify right side
    1,100,687.52x = 645,049,557,073.36
  5. Step 5: Solve for x
    x = 645,049,557,073.36/1,100,687.52
  6. Step 6: Final answer
    x = 586,042.40

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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.