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Finding the Fourth Proportional to 709,233.03, 978,736.82 and 403,309.53

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Solution

The fourth proportional to 709,233.03, 978,736.82 and 403,309.53 is: 556,564.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,233.03 : 978,736.82 = 403,309.53 : x
  2. Step 2: Convert to fraction form
    709,233.03/978,736.82 = 403,309.53/x
  3. Step 3: Cross multiply
    709,233.03x = 978,736.82 × 403,309.53
  4. Step 4: Simplify right side
    709,233.03x = 394,733,884,851.35
  5. Step 5: Solve for x
    x = 394,733,884,851.35/709,233.03
  6. Step 6: Final answer
    x = 556,564.44

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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.