Home / 1,126,490.91-1,689,707.21-378,536.91

Finding the Fourth Proportional to 1,126,490.91, 1,689,707.21 and 378,536.91

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Solution

The fourth proportional to 1,126,490.91, 1,689,707.21 and 378,536.91 is: 567,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,490.91 : 1,689,707.21 = 378,536.91 : x
  2. Step 2: Convert to fraction form
    1,126,490.91/1,689,707.21 = 378,536.91/x
  3. Step 3: Cross multiply
    1,126,490.91x = 1,689,707.21 × 378,536.91
  4. Step 4: Simplify right side
    1,126,490.91x = 639,616,544,185.44
  5. Step 5: Solve for x
    x = 639,616,544,185.44/1,126,490.91
  6. Step 6: Final answer
    x = 567,795.57

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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.