Home / 763,447.53-1,053,605.07-423,918.21

Finding the Fourth Proportional to 763,447.53, 1,053,605.07 and 423,918.21

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Solution

The fourth proportional to 763,447.53, 1,053,605.07 and 423,918.21 is: 585,033.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,447.53 : 1,053,605.07 = 423,918.21 : x
  2. Step 2: Convert to fraction form
    763,447.53/1,053,605.07 = 423,918.21/x
  3. Step 3: Cross multiply
    763,447.53x = 1,053,605.07 × 423,918.21
  4. Step 4: Simplify right side
    763,447.53x = 446,642,375,321.33
  5. Step 5: Solve for x
    x = 446,642,375,321.33/763,447.53
  6. Step 6: Final answer
    x = 585,033.49

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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.