Home / 725,400.72-1,000,989.32-403,090.40

Finding the Fourth Proportional to 725,400.72, 1,000,989.32 and 403,090.40

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Solution

The fourth proportional to 725,400.72, 1,000,989.32 and 403,090.40 is: 556,229.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,400.72 : 1,000,989.32 = 403,090.40 : x
  2. Step 2: Convert to fraction form
    725,400.72/1,000,989.32 = 403,090.40/x
  3. Step 3: Cross multiply
    725,400.72x = 1,000,989.32 × 403,090.40
  4. Step 4: Simplify right side
    725,400.72x = 403,489,185,394.53
  5. Step 5: Solve for x
    x = 403,489,185,394.53/725,400.72
  6. Step 6: Final answer
    x = 556,229.37

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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.