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Finding the Fourth Proportional to 708,998.16, 978,378.48 and 403,032

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Solution

The fourth proportional to 708,998.16, 978,378.48 and 403,032 is: 556,162.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,998.16 : 978,378.48 = 403,032 : x
  2. Step 2: Convert to fraction form
    708,998.16/978,378.48 = 403,032/x
  3. Step 3: Cross multiply
    708,998.16x = 978,378.48 × 403,032
  4. Step 4: Simplify right side
    708,998.16x = 394,317,835,551.36
  5. Step 5: Solve for x
    x = 394,317,835,551.36/708,998.16
  6. Step 6: Final answer
    x = 556,162.00

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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.