Home / 820,590.47-1,229,850.29-415,884.36

Finding the Fourth Proportional to 820,590.47, 1,229,850.29 and 415,884.36

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Solution

The fourth proportional to 820,590.47, 1,229,850.29 and 415,884.36 is: 623,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,590.47 : 1,229,850.29 = 415,884.36 : x
  2. Step 2: Convert to fraction form
    820,590.47/1,229,850.29 = 415,884.36/x
  3. Step 3: Cross multiply
    820,590.47x = 1,229,850.29 × 415,884.36
  4. Step 4: Simplify right side
    820,590.47x = 511,475,501,792.18
  5. Step 5: Solve for x
    x = 511,475,501,792.18/820,590.47
  6. Step 6: Final answer
    x = 623,301.79

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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.