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Finding the Fourth Proportional to 1,375,951.65, 1,899,712.59 and 893,890.68

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Solution

The fourth proportional to 1,375,951.65, 1,899,712.59 and 893,890.68 is: 1,234,153.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,951.65 : 1,899,712.59 = 893,890.68 : x
  2. Step 2: Convert to fraction form
    1,375,951.65/1,899,712.59 = 893,890.68/x
  3. Step 3: Cross multiply
    1,375,951.65x = 1,899,712.59 × 893,890.68
  4. Step 4: Simplify right side
    1,375,951.65x = 1,698,135,378,879.66
  5. Step 5: Solve for x
    x = 1,698,135,378,879.66/1,375,951.65
  6. Step 6: Final answer
    x = 1,234,153.38

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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.