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Finding the Fourth Proportional to 868,488, 1,198,513.44 and 486,514.68

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Solution

The fourth proportional to 868,488, 1,198,513.44 and 486,514.68 is: 671,390.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,488 : 1,198,513.44 = 486,514.68 : x
  2. Step 2: Convert to fraction form
    868,488/1,198,513.44 = 486,514.68/x
  3. Step 3: Cross multiply
    868,488x = 1,198,513.44 × 486,514.68
  4. Step 4: Simplify right side
    868,488x = 583,094,382,737.30
  5. Step 5: Solve for x
    x = 583,094,382,737.30/868,488
  6. Step 6: Final answer
    x = 671,390.26

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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.