Home / 687,804.89-949,283.69-401,324.27

Finding the Fourth Proportional to 687,804.89, 949,283.69 and 401,324.27

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Solution

The fourth proportional to 687,804.89, 949,283.69 and 401,324.27 is: 553,893.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,804.89 : 949,283.69 = 401,324.27 : x
  2. Step 2: Convert to fraction form
    687,804.89/949,283.69 = 401,324.27/x
  3. Step 3: Cross multiply
    687,804.89x = 949,283.69 × 401,324.27
  4. Step 4: Simplify right side
    687,804.89x = 380,970,577,159.12
  5. Step 5: Solve for x
    x = 380,970,577,159.12/687,804.89
  6. Step 6: Final answer
    x = 553,893.39

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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.