Home / 1,192,005.10-1,788,007.65-1,112,689.90

Finding the Fourth Proportional to 1,192,005.10, 1,788,007.65 and 1,112,689.90

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Solution

The fourth proportional to 1,192,005.10, 1,788,007.65 and 1,112,689.90 is: 1,669,034.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,005.10 : 1,788,007.65 = 1,112,689.90 : x
  2. Step 2: Convert to fraction form
    1,192,005.10/1,788,007.65 = 1,112,689.90/x
  3. Step 3: Cross multiply
    1,192,005.10x = 1,788,007.65 × 1,112,689.90
  4. Step 4: Simplify right side
    1,192,005.10x = 1,989,498,053,277.73
  5. Step 5: Solve for x
    x = 1,989,498,053,277.73/1,192,005.10
  6. Step 6: Final answer
    x = 1,669,034.85

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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.