Home / 680,736.08-1,020,578.15-343,603.20

Finding the Fourth Proportional to 680,736.08, 1,020,578.15 and 343,603.20

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Solution

The fourth proportional to 680,736.08, 1,020,578.15 and 343,603.20 is: 515,139.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,736.08 : 1,020,578.15 = 343,603.20 : x
  2. Step 2: Convert to fraction form
    680,736.08/1,020,578.15 = 343,603.20/x
  3. Step 3: Cross multiply
    680,736.08x = 1,020,578.15 × 343,603.20
  4. Step 4: Simplify right side
    680,736.08x = 350,673,916,472.06
  5. Step 5: Solve for x
    x = 350,673,916,472.06/680,736.08
  6. Step 6: Final answer
    x = 515,139.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.