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Finding the Fourth Proportional to 1,314,879, 1,814,394.79 and 763,486.92

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Solution

The fourth proportional to 1,314,879, 1,814,394.79 and 763,486.92 is: 1,053,531.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,879 : 1,814,394.79 = 763,486.92 : x
  2. Step 2: Convert to fraction form
    1,314,879/1,814,394.79 = 763,486.92/x
  3. Step 3: Cross multiply
    1,314,879x = 1,814,394.79 × 763,486.92
  4. Step 4: Simplify right side
    1,314,879x = 1,385,266,686,063.71
  5. Step 5: Solve for x
    x = 1,385,266,686,063.71/1,314,879
  6. Step 6: Final answer
    x = 1,053,531.68

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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.