Home / 1,125,965.88-1,553,446.89-642,183.12

Finding the Fourth Proportional to 1,125,965.88, 1,553,446.89 and 642,183.12

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Solution

The fourth proportional to 1,125,965.88, 1,553,446.89 and 642,183.12 is: 885,992.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,965.88 : 1,553,446.89 = 642,183.12 : x
  2. Step 2: Convert to fraction form
    1,125,965.88/1,553,446.89 = 642,183.12/x
  3. Step 3: Cross multiply
    1,125,965.88x = 1,553,446.89 × 642,183.12
  4. Step 4: Simplify right side
    1,125,965.88x = 997,597,370,574.50
  5. Step 5: Solve for x
    x = 997,597,370,574.50/1,125,965.88
  6. Step 6: Final answer
    x = 885,992.54

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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.