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Finding the Fourth Proportional to 874,858.39, 1,207,317.77 and 487,663

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Solution

The fourth proportional to 874,858.39, 1,207,317.77 and 487,663 is: 672,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,858.39 : 1,207,317.77 = 487,663 : x
  2. Step 2: Convert to fraction form
    874,858.39/1,207,317.77 = 487,663/x
  3. Step 3: Cross multiply
    874,858.39x = 1,207,317.77 × 487,663
  4. Step 4: Simplify right side
    874,858.39x = 588,764,205,671.51
  5. Step 5: Solve for x
    x = 588,764,205,671.51/874,858.39
  6. Step 6: Final answer
    x = 672,982.29

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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.