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Finding the Fourth Proportional to 709,018.48, 978,457.62 and 403,087.96

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Solution

The fourth proportional to 709,018.48, 978,457.62 and 403,087.96 is: 556,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,018.48 : 978,457.62 = 403,087.96 : x
  2. Step 2: Convert to fraction form
    709,018.48/978,457.62 = 403,087.96/x
  3. Step 3: Cross multiply
    709,018.48x = 978,457.62 × 403,087.96
  4. Step 4: Simplify right side
    709,018.48x = 394,404,485,992.26
  5. Step 5: Solve for x
    x = 394,404,485,992.26/709,018.48
  6. Step 6: Final answer
    x = 556,268.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.