Home / 820,617.16-1,230,802.60-259,578.76

Finding the Fourth Proportional to 820,617.16, 1,230,802.60 and 259,578.76

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Solution

The fourth proportional to 820,617.16, 1,230,802.60 and 259,578.76 is: 389,329.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,617.16 : 1,230,802.60 = 259,578.76 : x
  2. Step 2: Convert to fraction form
    820,617.16/1,230,802.60 = 259,578.76/x
  3. Step 3: Cross multiply
    820,617.16x = 1,230,802.60 × 259,578.76
  4. Step 4: Simplify right side
    820,617.16x = 319,490,212,712.78
  5. Step 5: Solve for x
    x = 319,490,212,712.78/820,617.16
  6. Step 6: Final answer
    x = 389,329.19

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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.