Home / 727,416.21-1,003,865.39-405,126.30

Finding the Fourth Proportional to 727,416.21, 1,003,865.39 and 405,126.30

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Solution

The fourth proportional to 727,416.21, 1,003,865.39 and 405,126.30 is: 559,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,416.21 : 1,003,865.39 = 405,126.30 : x
  2. Step 2: Convert to fraction form
    727,416.21/1,003,865.39 = 405,126.30/x
  3. Step 3: Cross multiply
    727,416.21x = 1,003,865.39 × 405,126.30
  4. Step 4: Simplify right side
    727,416.21x = 406,692,272,887.62
  5. Step 5: Solve for x
    x = 406,692,272,887.62/727,416.21
  6. Step 6: Final answer
    x = 559,091.57

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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.