Home / 855,890.64-1,284,075.81-343,915.29

Finding the Fourth Proportional to 855,890.64, 1,284,075.81 and 343,915.29

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Solution

The fourth proportional to 855,890.64, 1,284,075.81 and 343,915.29 is: 515,969.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,890.64 : 1,284,075.81 = 343,915.29 : x
  2. Step 2: Convert to fraction form
    855,890.64/1,284,075.81 = 343,915.29/x
  3. Step 3: Cross multiply
    855,890.64x = 1,284,075.81 × 343,915.29
  4. Step 4: Simplify right side
    855,890.64x = 441,613,304,578.14
  5. Step 5: Solve for x
    x = 441,613,304,578.14/855,890.64
  6. Step 6: Final answer
    x = 515,969.31

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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.