Home / 1,152,640.08-1,590,578.56-643,375.24

Finding the Fourth Proportional to 1,152,640.08, 1,590,578.56 and 643,375.24

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Solution

The fourth proportional to 1,152,640.08, 1,590,578.56 and 643,375.24 is: 887,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,640.08 : 1,590,578.56 = 643,375.24 : x
  2. Step 2: Convert to fraction form
    1,152,640.08/1,590,578.56 = 643,375.24/x
  3. Step 3: Cross multiply
    1,152,640.08x = 1,590,578.56 × 643,375.24
  4. Step 4: Simplify right side
    1,152,640.08x = 1,023,338,862,778.85
  5. Step 5: Solve for x
    x = 1,023,338,862,778.85/1,152,640.08
  6. Step 6: Final answer
    x = 887,821.69

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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.