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Finding the Fourth Proportional to 708,995.97, 978,379.07 and 403,032.24

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Solution

The fourth proportional to 708,995.97, 978,379.07 and 403,032.24 is: 556,164.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,995.97 : 978,379.07 = 403,032.24 : x
  2. Step 2: Convert to fraction form
    708,995.97/978,379.07 = 403,032.24/x
  3. Step 3: Cross multiply
    708,995.97x = 978,379.07 × 403,032.24
  4. Step 4: Simplify right side
    708,995.97x = 394,318,306,136.06
  5. Step 5: Solve for x
    x = 394,318,306,136.06/708,995.97
  6. Step 6: Final answer
    x = 556,164.38

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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.