Home / 1,128,085.52-1,691,286.73-678,701.10

Finding the Fourth Proportional to 1,128,085.52, 1,691,286.73 and 678,701.10

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Solution

The fourth proportional to 1,128,085.52, 1,691,286.73 and 678,701.10 is: 1,017,545.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,085.52 : 1,691,286.73 = 678,701.10 : x
  2. Step 2: Convert to fraction form
    1,128,085.52/1,691,286.73 = 678,701.10/x
  3. Step 3: Cross multiply
    1,128,085.52x = 1,691,286.73 × 678,701.10
  4. Step 4: Simplify right side
    1,128,085.52x = 1,147,878,162,369.65
  5. Step 5: Solve for x
    x = 1,147,878,162,369.65/1,128,085.52
  6. Step 6: Final answer
    x = 1,017,545.34

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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.